diff --git a/apps/isa-app/src/app/store/root-state.service.ts b/apps/isa-app/src/app/store/root-state.service.ts
index 59e437a85..32c99dc3d 100644
--- a/apps/isa-app/src/app/store/root-state.service.ts
+++ b/apps/isa-app/src/app/store/root-state.service.ts
@@ -1,18 +1,18 @@
-import { Injectable } from '@angular/core';
-import { Logger, LogLevel } from '@core/logger';
-import { Store } from '@ngrx/store';
-import { debounceTime, switchMap, takeUntil } from 'rxjs/operators';
-import { RootState } from './root.state';
-import packageInfo from 'packageJson';
-import { environment } from '../../environments/environment';
-import { Subject } from 'rxjs';
-import { AuthService } from '@core/auth';
-import { injectStorage, UserStorageProvider } from '@isa/core/storage';
-import { isEqual } from 'lodash';
+import { Injectable } from "@angular/core";
+import { Logger, LogLevel } from "@core/logger";
+import { Store } from "@ngrx/store";
+import { debounceTime, switchMap, takeUntil } from "rxjs/operators";
+import { RootState } from "./root.state";
+import packageInfo from "packageJson";
+import { environment } from "../../environments/environment";
+import { Subject } from "rxjs";
+import { AuthService } from "@core/auth";
+import { injectStorage, UserStorageProvider } from "@isa/core/storage";
+import { isEqual } from "lodash";
 
-@Injectable({ providedIn: 'root' })
+@Injectable({ providedIn: "root" })
 export class RootStateService {
-  static LOCAL_STORAGE_KEY = 'ISA_APP_INITIALSTATE';
+  static LOCAL_STORAGE_KEY = "ISA_APP_INITIALSTATE";
 
   #storage = injectStorage(UserStorageProvider);
 
@@ -29,14 +29,17 @@ export class RootStateService {
       );
     }
 
-    window['clearUserState'] = () => {
+    window["clearUserState"] = () => {
       this.clear();
     };
   }
 
   async init() {
     await this.load();
-    this._store.dispatch({ type: 'HYDRATE', payload: RootStateService.LoadFromLocalStorage() });
+    this._store.dispatch({
+      type: "HYDRATE",
+      payload: RootStateService.LoadFromLocalStorage(),
+    });
     this.initSave();
   }
 
@@ -50,14 +53,10 @@ export class RootStateService {
           const data = {
             ...state,
             version: packageInfo.version,
-            sub: this._authService.getClaimByKey('sub'),
+            sub: this._authService.getClaimByKey("sub"),
           };
           RootStateService.SaveToLocalStorageRaw(JSON.stringify(data));
-          return this.#storage.set('state', {
-            ...state,
-            version: packageInfo.version,
-            sub: this._authService.getClaimByKey('sub'),
-          });
+          return this.#storage.set("state", data);
         }),
       )
       .subscribe();
@@ -68,7 +67,7 @@ export class RootStateService {
    */
   async load(): Promise<boolean> {
     try {
-      const res = await this.#storage.get('state');
+      const res = await this.#storage.get("state");
 
       const storageContent = RootStateService.LoadFromLocalStorageRaw();
 
@@ -88,7 +87,7 @@ export class RootStateService {
   async clear() {
     try {
       this._cancelSave.next();
-      await this.#storage.clear('state');
+      await this.#storage.clear("state");
       await new Promise((resolve) => setTimeout(resolve, 100));
       RootStateService.RemoveFromLocalStorage();
       await new Promise((resolve) => setTimeout(resolve, 100));
@@ -112,7 +111,7 @@ export class RootStateService {
       try {
         return JSON.parse(raw);
       } catch (error) {
-        console.error('Error parsing local storage:', error);
+        console.error("Error parsing local storage:", error);
         this.RemoveFromLocalStorage();
       }
     }
diff --git a/apps/isa-app/src/shared/components/searchbox/searchbox.component.ts b/apps/isa-app/src/shared/components/searchbox/searchbox.component.ts
index f9fe6ba21..9efcc4896 100644
--- a/apps/isa-app/src/shared/components/searchbox/searchbox.component.ts
+++ b/apps/isa-app/src/shared/components/searchbox/searchbox.component.ts
@@ -16,20 +16,20 @@ import {
   forwardRef,
   Optional,
   inject,
-} from '@angular/core';
-import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
-import { UiAutocompleteComponent } from '@ui/autocomplete';
-import { UiFormControlDirective } from '@ui/form-control';
-import { containsElement } from '@utils/common';
-import { Subscription } from 'rxjs';
-import { ScanAdapterService } from '@adapter/scan';
-import { injectCancelSearch } from '@shared/services/cancel-subject';
-import { EnvironmentService } from '@core/environment';
+} from "@angular/core";
+import { ControlValueAccessor, NG_VALUE_ACCESSOR } from "@angular/forms";
+import { UiAutocompleteComponent } from "@ui/autocomplete";
+import { UiFormControlDirective } from "@ui/form-control";
+import { containsElement } from "@utils/common";
+import { Subscription } from "rxjs";
+import { ScanAdapterService } from "@adapter/scan";
+import { injectCancelSearch } from "@shared/services/cancel-subject";
+import { EnvironmentService } from "@core/environment";
 
 @Component({
-  selector: 'shared-searchbox',
-  templateUrl: 'searchbox.component.html',
-  styleUrls: ['searchbox.component.scss'],
+  selector: "shared-searchbox",
+  templateUrl: "searchbox.component.html",
+  styleUrls: ["searchbox.component.scss"],
   providers: [
     {
       provide: NG_VALUE_ACCESSOR,
@@ -49,9 +49,9 @@ export class SearchboxComponent
   cancelSearch = injectCancelSearch({ optional: true });
 
   disabled: boolean;
-  type = 'text';
+  type = "text";
 
-  @ViewChild('input', { read: ElementRef, static: true })
+  @ViewChild("input", { read: ElementRef, static: true })
   input: ElementRef;
 
   @ContentChild(UiAutocompleteComponent)
@@ -61,9 +61,9 @@ export class SearchboxComponent
   focusAfterViewInit = true;
 
   @Input()
-  placeholder = '';
+  placeholder = "";
 
-  private _query = '';
+  private _query = "";
 
   @Input()
   get query() {
@@ -94,7 +94,7 @@ export class SearchboxComponent
   scanner = false;
 
   @Input()
-  hint = '';
+  hint = "";
 
   @Input()
   autocompleteValueSelector: (item: any) => string = (item: any) => item;
@@ -104,11 +104,11 @@ export class SearchboxComponent
   }
 
   clear(): void {
-    this.setQuery('');
+    this.setQuery("");
     this.cancelSearch();
   }
 
-  @HostBinding('class.autocomplete-opend')
+  @HostBinding("class.autocomplete-opend")
   get autocompleteOpen() {
     return this.autocomplete?.opend;
   }
@@ -213,13 +213,13 @@ export class SearchboxComponent
   }
 
   clearHint() {
-    this.hint = '';
+    this.hint = "";
     this.focused.emit(true);
     this.cdr.markForCheck();
   }
 
   onKeyup(event: KeyboardEvent) {
-    if (event.key === 'Enter') {
+    if (event.key === "Enter") {
       if (this.autocomplete?.opend && this.autocomplete?.activeItem) {
         this.setQuery(this.autocomplete?.activeItem?.item);
         this.autocomplete?.close();
@@ -227,7 +227,7 @@ export class SearchboxComponent
       this.search.emit(this.query);
 
       event.preventDefault();
-    } else if (event.key === 'ArrowUp' || event.key === 'ArrowDown') {
+    } else if (event.key === "ArrowUp" || event.key === "ArrowDown") {
       this.handleArrowUpDownEvent(event);
     }
   }
@@ -242,7 +242,7 @@ export class SearchboxComponent
     }
   }
 
-  @HostListener('window:click', ['$event'])
+  @HostListener("window:click", ["$event"])
   focusLost(event: MouseEvent) {
     if (
       this.autocomplete?.opend &&
@@ -256,9 +256,11 @@ export class SearchboxComponent
     this.search.emit(this.query);
   }
 
-  @HostListener('focusout', ['$event'])
+  @HostListener("focusout", ["$event"])
   onBlur() {
-    this.onTouched();
+    if (typeof this.onTouched === "function") {
+      this.onTouched();
+    }
     this.focused.emit(false);
     this.cdr.markForCheck();
   }
diff --git a/apps/isa-app/src/ui/searchbox/next/searchbox.component.ts b/apps/isa-app/src/ui/searchbox/next/searchbox.component.ts
index eb6503938..7dfee1167 100644
--- a/apps/isa-app/src/ui/searchbox/next/searchbox.component.ts
+++ b/apps/isa-app/src/ui/searchbox/next/searchbox.component.ts
@@ -16,20 +16,20 @@ import {
   forwardRef,
   Optional,
   inject,
-} from '@angular/core';
-import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
-import { UiAutocompleteComponent } from '@ui/autocomplete';
-import { UiFormControlDirective } from '@ui/form-control';
-import { Subscription } from 'rxjs';
-import { ScanAdapterService } from '@adapter/scan';
-import { injectCancelSearch } from '@shared/services/cancel-subject';
-import { containsElement } from '@utils/common';
-import { EnvironmentService } from '@core/environment';
+} from "@angular/core";
+import { ControlValueAccessor, NG_VALUE_ACCESSOR } from "@angular/forms";
+import { UiAutocompleteComponent } from "@ui/autocomplete";
+import { UiFormControlDirective } from "@ui/form-control";
+import { Subscription } from "rxjs";
+import { ScanAdapterService } from "@adapter/scan";
+import { injectCancelSearch } from "@shared/services/cancel-subject";
+import { containsElement } from "@utils/common";
+import { EnvironmentService } from "@core/environment";
 
 @Component({
-  selector: 'ui-searchbox',
-  templateUrl: 'searchbox.component.html',
-  styleUrls: ['searchbox.component.scss'],
+  selector: "ui-searchbox",
+  templateUrl: "searchbox.component.html",
+  styleUrls: ["searchbox.component.scss"],
   providers: [
     {
       provide: NG_VALUE_ACCESSOR,
@@ -49,9 +49,9 @@ export class UiSearchboxNextComponent
   private readonly _cancelSearch = injectCancelSearch({ optional: true });
 
   disabled: boolean;
-  type = 'text';
+  type = "text";
 
-  @ViewChild('input', { read: ElementRef, static: true })
+  @ViewChild("input", { read: ElementRef, static: true })
   input: ElementRef;
 
   @ContentChild(UiAutocompleteComponent)
@@ -61,9 +61,9 @@ export class UiSearchboxNextComponent
   focusAfterViewInit: boolean = true;
 
   @Input()
-  placeholder: string = '';
+  placeholder: string = "";
 
-  private _query = '';
+  private _query = "";
 
   @Input()
   get query() {
@@ -94,7 +94,7 @@ export class UiSearchboxNextComponent
   scanner = false;
 
   @Input()
-  hint: string = '';
+  hint: string = "";
 
   @Output()
   hintCleared = new EventEmitter<void>();
@@ -107,11 +107,11 @@ export class UiSearchboxNextComponent
   }
 
   clear(): void {
-    this.setQuery('');
+    this.setQuery("");
     this._cancelSearch();
   }
 
-  @HostBinding('class.autocomplete-opend')
+  @HostBinding("class.autocomplete-opend")
   get autocompleteOpen() {
     return this.autocomplete?.opend;
   }
@@ -212,14 +212,14 @@ export class UiSearchboxNextComponent
   }
 
   clearHint() {
-    this.hint = '';
+    this.hint = "";
     this.focused.emit(true);
     this.hintCleared.emit();
     this.cdr.markForCheck();
   }
 
   onKeyup(event: KeyboardEvent) {
-    if (event.key === 'Enter') {
+    if (event.key === "Enter") {
       if (this.autocomplete?.opend && this.autocomplete?.activeItem) {
         this.setQuery(this.autocomplete?.activeItem?.item);
         this.autocomplete?.close();
@@ -227,7 +227,7 @@ export class UiSearchboxNextComponent
       this.search.emit(this.query);
 
       event.preventDefault();
-    } else if (event.key === 'ArrowUp' || event.key === 'ArrowDown') {
+    } else if (event.key === "ArrowUp" || event.key === "ArrowDown") {
       this.handleArrowUpDownEvent(event);
     }
   }
@@ -235,12 +235,14 @@ export class UiSearchboxNextComponent
   handleArrowUpDownEvent(event: KeyboardEvent) {
     this.autocomplete?.handleKeyboardEvent(event);
     if (this.autocomplete?.activeItem) {
-      const query = this.autocompleteValueSelector(this.autocomplete.activeItem.item);
+      const query = this.autocompleteValueSelector(
+        this.autocomplete.activeItem.item,
+      );
       this.setQuery(query, false, false);
     }
   }
 
-  @HostListener('window:click', ['$event'])
+  @HostListener("window:click", ["$event"])
   focusLost(event: MouseEvent) {
     if (
       this.autocomplete?.opend &&
@@ -254,9 +256,11 @@ export class UiSearchboxNextComponent
     this.search.emit(this.query);
   }
 
-  @HostListener('focusout', ['$event'])
+  @HostListener("focusout", ["$event"])
   onBlur() {
-    this.onTouched();
+    if (typeof this.onTouched === "function") {
+      this.onTouched();
+    }
     this.focused.emit(false);
     this.cdr.markForCheck();
   }
diff --git a/libs/core/storage/src/lib/user.storage-provider.ts b/libs/core/storage/src/lib/user.storage-provider.ts
index 04f330e05..9dc3be7ed 100644
--- a/libs/core/storage/src/lib/user.storage-provider.ts
+++ b/libs/core/storage/src/lib/user.storage-provider.ts
@@ -1,27 +1,42 @@
-import { inject, Injectable } from '@angular/core';
-import { StorageProvider } from './storage-provider';
-import { UserStateService } from '@generated/swagger/isa-api';
-import { firstValueFrom, map, shareReplay } from 'rxjs';
+import { inject, Injectable } from "@angular/core";
+import { StorageProvider } from "./storage-provider";
+import { UserStateService } from "@generated/swagger/isa-api";
+import { catchError, firstValueFrom, map, of } from "rxjs";
+import { isEmpty } from "lodash";
 
-@Injectable({ providedIn: 'root' })
+@Injectable({ providedIn: "root" })
 export class UserStorageProvider implements StorageProvider {
   #userStateService = inject(UserStateService);
 
   private state$ = this.#userStateService.UserStateGetUserState().pipe(
     map((res) => {
-      if (res.result?.content) {
+      if (res?.result?.content) {
         return JSON.parse(res.result.content);
       }
       return {};
     }),
-    shareReplay(1),
+    catchError((err) => {
+      console.warn(
+        "No UserStateGetUserState found, returning empty object:",
+        err,
+      );
+      return of({}); // Return empty state fallback
+    }),
+    // shareReplay(1), #5249, #5270 Würde beim Fehlerfall den fehlerhaften Zustand behalten
+    // Aktuell wird nun jedes mal 2 mal der UserState aufgerufen (GET + POST)
+    // Damit bei der set Funktion immer der aktuelle Zustand verwendet wird
   );
 
-  async set(key: string, value: unknown): Promise<void> {
+  async set(key: string, value: Record<string, unknown>): Promise<void> {
     const current = await firstValueFrom(this.state$);
-    firstValueFrom(
+    const content =
+      current && !isEmpty(current)
+        ? { ...current, [key]: value }
+        : { [key]: value };
+
+    await firstValueFrom(
       this.#userStateService.UserStateSetUserState({
-        content: JSON.stringify({ ...current, [key]: value }),
+        content: JSON.stringify(content),
       }),
     );
   }
@@ -32,7 +47,6 @@ export class UserStorageProvider implements StorageProvider {
   }
 
   async clear(key: string): Promise<void> {
-     
     const current = await firstValueFrom(this.state$);
     delete current[key];
     firstValueFrom(this.#userStateService.UserStateResetUserState());
diff --git a/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.html b/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.html
index 856db3361..b0d46a695 100644
--- a/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.html
+++ b/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.html
@@ -35,6 +35,7 @@
     name="isaActionEdit"
     data-what="button"
     data-which="edit-return-item"
-    (click)="navigateBack()"
+    [disabled]="returnItemsAndPrintReciptPending()"
+    (click)="location.back()"
   ></ui-icon-button>
 </div>
diff --git a/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.spec.ts b/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.spec.ts
index 964a8f7b3..3aeda12a7 100644
--- a/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.spec.ts
+++ b/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.spec.ts
@@ -1,16 +1,16 @@
-import { createRoutingFactory, Spectator } from '@ngneat/spectator/jest';
-import { ReturnSummaryItemComponent } from './return-summary-item.component';
-import { MockComponents, MockProvider } from 'ng-mocks';
-import { ReturnProductInfoComponent } from '@isa/oms/shared/product-info';
+import { createRoutingFactory, Spectator } from "@ngneat/spectator/jest";
+import { ReturnSummaryItemComponent } from "./return-summary-item.component";
+import { MockComponents, MockProvider } from "ng-mocks";
+import { ReturnProductInfoComponent } from "@isa/oms/shared/product-info";
 import {
   Product,
   ReturnProcess,
   ReturnProcessQuestionKey,
   ReturnProcessService,
-} from '@isa/oms/data-access';
-import { NgIcon } from '@ng-icons/core';
-import { IconButtonComponent } from '@isa/ui/buttons';
-import { Router } from '@angular/router';
+} from "@isa/oms/data-access";
+import { NgIcon } from "@ng-icons/core";
+import { IconButtonComponent } from "@isa/ui/buttons";
+import { Location } from "@angular/common";
 
 /**
  * Creates a mock ReturnProcess with default values that can be overridden
@@ -21,20 +21,20 @@ function createMockReturnProcess(
   return {
     id: 1,
     processId: 1,
-    productCategory: 'Electronics',
+    productCategory: "Electronics",
     answers: {},
     receiptId: 123,
     receiptItem: {
       id: 321,
       product: {
-        name: 'Test Product',
+        name: "Test Product",
       },
     },
     ...partial,
   } as ReturnProcess;
 }
 
-describe('ReturnSummaryItemComponent', () => {
+describe("ReturnSummaryItemComponent", () => {
   let spectator: Spectator<ReturnSummaryItemComponent>;
   let returnProcessService: jest.Mocked<ReturnProcessService>;
 
@@ -48,7 +48,10 @@ describe('ReturnSummaryItemComponent', () => {
     providers: [
       MockProvider(ReturnProcessService, {
         getReturnInfo: jest.fn(),
-        eligibleForReturn: jest.fn().mockReturnValue({ state: 'eligible' }),
+        eligibleForReturn: jest.fn().mockReturnValue({ state: "eligible" }),
+      }),
+      MockProvider(Location, {
+        back: jest.fn(),
       }),
     ],
     shallow: true,
@@ -64,38 +67,38 @@ describe('ReturnSummaryItemComponent', () => {
     spectator.detectChanges();
   });
 
-  describe('Component Creation', () => {
-    it('should create the component', () => {
+  describe("Component Creation", () => {
+    it("should create the component", () => {
       expect(spectator.component).toBeTruthy();
     });
   });
 
-  describe('Return Information Display', () => {
+  describe("Return Information Display", () => {
     const mockReturnInfo = {
-      itemCondition: 'itemCondition',
-      returnDetails: { [ReturnProcessQuestionKey.CaseDamaged]: 'no' },
-      returnReason: 'returnReason',
+      itemCondition: "itemCondition",
+      returnDetails: { [ReturnProcessQuestionKey.CaseDamaged]: "no" },
+      returnReason: "returnReason",
       otherProduct: {
-        ean: 'ean',
+        ean: "ean",
       } as Product,
-      comment: 'comment',
+      comment: "comment",
     };
 
     beforeEach(() => {
       jest
-        .spyOn(returnProcessService, 'getReturnInfo')
+        .spyOn(returnProcessService, "getReturnInfo")
         .mockReturnValue(mockReturnInfo);
-      spectator.setInput('returnProcess', createMockReturnProcess({ id: 2 }));
+      spectator.setInput("returnProcess", createMockReturnProcess({ id: 2 }));
       spectator.detectChanges();
     });
-    it('should provide correct return information array', () => {
+    it("should provide correct return information array", () => {
       // Arrange
       const expectedInfos = [
-        'itemCondition',
-        'returnReason',
-        'Gehäuse beschädigt: no',
-        'Geliefert wurde: ean',
-        'comment',
+        "itemCondition",
+        "returnReason",
+        "Gehäuse beschädigt: no",
+        "Geliefert wurde: ean",
+        "comment",
       ];
 
       // Act
@@ -105,14 +108,14 @@ describe('ReturnSummaryItemComponent', () => {
       expect(actualInfos).toEqual(expectedInfos);
       expect(actualInfos.length).toBe(5);
     });
-    it('should render return info items with correct content', () => {
+    it("should render return info items with correct content", () => {
       // Arrange
       const expectedInfos = [
-        'itemCondition',
-        'returnReason',
-        'Gehäuse beschädigt: no',
-        'Geliefert wurde: ean',
-        'comment',
+        "itemCondition",
+        "returnReason",
+        "Gehäuse beschädigt: no",
+        "Geliefert wurde: ean",
+        "comment",
       ];
 
       // Act
@@ -125,14 +128,14 @@ describe('ReturnSummaryItemComponent', () => {
       expect(listItems.length).toBe(expectedInfos.length);
       listItems.forEach((item, index) => {
         expect(item).toHaveText(expectedInfos[index]);
-        expect(item).toHaveAttribute('data-info-index', index.toString());
+        expect(item).toHaveAttribute("data-info-index", index.toString());
       });
     });
 
-    it('should handle undefined return info gracefully', () => {
+    it("should handle undefined return info gracefully", () => {
       // Arrange
       returnProcessService.getReturnInfo.mockReturnValue(undefined);
-      spectator.setInput('returnProcess', createMockReturnProcess({ id: 3 }));
+      spectator.setInput("returnProcess", createMockReturnProcess({ id: 3 }));
       spectator.detectChanges();
 
       // Act
@@ -146,26 +149,26 @@ describe('ReturnSummaryItemComponent', () => {
       expect(listItems.length).toBe(0);
     });
 
-    describe('returnDetails mapping', () => {
-      it('should map multiple returnDetails keys to correct info strings', () => {
+    describe("returnDetails mapping", () => {
+      it("should map multiple returnDetails keys to correct info strings", () => {
         const expected = [
-          'itemCondition',
-          'returnReason',
-          'Gehäuse beschädigt: Ja',
-          'Display beschädigt: Nein',
-          'Geliefert wurde: ean',
-          'comment',
+          "itemCondition",
+          "returnReason",
+          "Gehäuse beschädigt: Ja",
+          "Display beschädigt: Nein",
+          "Geliefert wurde: ean",
+          "comment",
         ];
         // Arrange
         const details = {
-          [ReturnProcessQuestionKey.CaseDamaged]: 'Ja',
-          [ReturnProcessQuestionKey.DisplayDamaged]: 'Nein',
+          [ReturnProcessQuestionKey.CaseDamaged]: "Ja",
+          [ReturnProcessQuestionKey.DisplayDamaged]: "Nein",
         };
         returnProcessService.getReturnInfo.mockReturnValue({
           ...mockReturnInfo,
           returnDetails: details,
         });
-        spectator.setInput('returnProcess', createMockReturnProcess({ id: 4 }));
+        spectator.setInput("returnProcess", createMockReturnProcess({ id: 4 }));
         spectator.detectChanges();
 
         // Act
@@ -173,31 +176,31 @@ describe('ReturnSummaryItemComponent', () => {
         expect(infos).toEqual(expected);
       });
 
-      it('should not include returnDetails if empty', () => {
+      it("should not include returnDetails if empty", () => {
         // Arrange
         returnProcessService.getReturnInfo.mockReturnValue({
           ...mockReturnInfo,
           returnDetails: {},
         });
-        spectator.setInput('returnProcess', createMockReturnProcess({ id: 5 }));
+        spectator.setInput("returnProcess", createMockReturnProcess({ id: 5 }));
         spectator.detectChanges();
 
         // Act
         const infos = spectator.component.returnInfos();
 
         // Assert
-        expect(infos.some((info) => info.includes('Gehäuse beschädigt'))).toBe(
+        expect(infos.some((info) => info.includes("Gehäuse beschädigt"))).toBe(
           false,
         );
-        expect(infos.some((info) => info.includes('Zubehör fehlt'))).toBe(
+        expect(infos.some((info) => info.includes("Zubehör fehlt"))).toBe(
           false,
         );
       });
     });
   });
 
-  describe('Navigation', () => {
-    it('should render edit button with correct attributes', () => {
+  describe("Navigation", () => {
+    it("should render edit button with correct attributes", () => {
       // Assert
       const editButton = spectator.query(
         '[data-what="button"][data-which="edit-return-item"]',
@@ -205,7 +208,7 @@ describe('ReturnSummaryItemComponent', () => {
       expect(editButton).toExist();
     });
 
-    it('should navigate back when edit button is clicked', () => {
+    it("should navigate back when edit button is clicked", () => {
       // Arrange
       const editButton = spectator.query(
         '[data-what="button"][data-which="edit-return-item"]',
@@ -217,25 +220,20 @@ describe('ReturnSummaryItemComponent', () => {
       }
 
       // Assert
-      expect(spectator.inject(Router).navigate).toHaveBeenCalledWith(
-        ['..'],
-        expect.objectContaining({
-          relativeTo: expect.anything(),
-        }),
-      );
+      expect(spectator.inject(Location).back).toHaveBeenCalled();
     });
   });
 
-  it('should render the product info component', () => {
+  it("should render the product info component", () => {
     const productInfo = spectator.query(ReturnProductInfoComponent);
     expect(productInfo).toExist();
   });
 
-  it('should compute eligibility state as eligible', () => {
+  it("should compute eligibility state as eligible", () => {
     (returnProcessService.eligibleForReturn as jest.Mock).mockReturnValue({
-      state: 'eligible',
+      state: "eligible",
     });
     spectator.detectChanges();
-    expect(spectator.component.eligibleForReturn()?.state).toBe('eligible');
+    expect(spectator.component.eligibleForReturn()?.state).toBe("eligible");
   });
 });
diff --git a/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.ts b/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.ts
index dc4673b4e..7a901b185 100644
--- a/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.ts
+++ b/libs/oms/feature/return-summary/src/lib/return-summary-item/return-summary-item.component.ts
@@ -4,13 +4,13 @@ import {
   computed,
   inject,
   input,
-} from '@angular/core';
-import { ActivatedRoute, Router } from '@angular/router';
+} from "@angular/core";
+import { Location } from "@angular/common";
 import {
   isaActionChevronRight,
   isaActionClose,
   isaActionEdit,
-} from '@isa/icons';
+} from "@isa/icons";
 import {
   EligibleForReturn,
   EligibleForReturnState,
@@ -18,10 +18,10 @@ import {
   ReturnProcessService,
   ProductCategory,
   returnDetailsMapping,
-} from '@isa/oms/data-access';
-import { ReturnProductInfoComponent } from '@isa/oms/shared/product-info';
-import { IconButtonComponent } from '@isa/ui/buttons';
-import { NgIcon, provideIcons } from '@ng-icons/core';
+} from "@isa/oms/data-access";
+import { ReturnProductInfoComponent } from "@isa/oms/shared/product-info";
+import { IconButtonComponent } from "@isa/ui/buttons";
+import { NgIcon, provideIcons } from "@ng-icons/core";
 
 /**
  * Displays a single item in the return process summary, showing product details
@@ -47,30 +47,34 @@ import { NgIcon, provideIcons } from '@ng-icons/core';
  * ```
  */
 @Component({
-  selector: 'oms-feature-return-summary-item',
-  templateUrl: './return-summary-item.component.html',
-  styleUrls: ['./return-summary-item.component.scss'],
+  selector: "oms-feature-return-summary-item",
+  templateUrl: "./return-summary-item.component.html",
+  styleUrls: ["./return-summary-item.component.scss"],
   changeDetection: ChangeDetectionStrategy.OnPush,
   imports: [ReturnProductInfoComponent, NgIcon, IconButtonComponent],
   providers: [
     provideIcons({ isaActionChevronRight, isaActionEdit, isaActionClose }),
   ],
   host: {
-    'data-what': 'list-item',
-    'data-which': 'return-process-item',
-    '[attr.data-receipt-id]': 'returnProcess()?.receiptId',
-    '[attr.data-return-item-id]': 'returnProcess()?.returnItem?.id',
+    "data-what": "list-item",
+    "data-which": "return-process-item",
+    "[attr.data-receipt-id]": "returnProcess()?.receiptId",
+    "[attr.data-return-item-id]": "returnProcess()?.returnItem?.id",
   },
 })
 export class ReturnSummaryItemComponent {
   EligibleForReturnState = EligibleForReturnState;
   #returnProcessService = inject(ReturnProcessService);
-  #router = inject(Router);
-  #activatedRoute = inject(ActivatedRoute);
+
+  /** Angular Location service for navigation */
+  location = inject(Location);
 
   /** The return process object containing all information about the return */
   returnProcess = input.required<ReturnProcess>();
 
+  /** The status of the return items and print receipt operation */
+  returnItemsAndPrintReciptPending = input<boolean>(false);
+
   /**
    * Computes whether the current return process is eligible for return.
    *
@@ -149,8 +153,4 @@ export class ReturnSummaryItemComponent {
     // remove duplicates
     return Array.from(new Set(result));
   });
-
-  navigateBack() {
-    this.#router.navigate(['..'], { relativeTo: this.#activatedRoute });
-  }
 }
diff --git a/libs/oms/feature/return-summary/src/lib/return-summary.component.html b/libs/oms/feature/return-summary/src/lib/return-summary.component.html
index e5698ed3d..933686721 100644
--- a/libs/oms/feature/return-summary/src/lib/return-summary.component.html
+++ b/libs/oms/feature/return-summary/src/lib/return-summary.component.html
@@ -3,6 +3,7 @@
   color="tertiary"
   size="small"
   class="px-[0.875rem] py-1 min-w-0 bg-white gap-1 absolute top-0 left-0"
+  [disabled]="returnItemsAndPrintReciptStatusPending()"
   (click)="location.back()"
 >
   <ng-icon name="isaActionChevronLeft" size="1.5rem" class="-ml-2"></ng-icon>
@@ -28,19 +29,22 @@
       data-which="return-process-item"
       [attr.data-item-id]="item.id"
       [attr.data-item-category]="item.productCategory"
+      [returnItemsAndPrintReciptPending]="
+        returnItemsAndPrintReciptStatusPending()
+      "
     ></oms-feature-return-summary-item>
   }
 </div>
 <div class="mt-6 text-center">
-  @if (returnItemsAndPrintReciptStatus() !== 'success') {
+  @if (returnItemsAndPrintReciptStatus() !== "success") {
     <button
       type="button"
       size="large"
       uiButton
       color="brand"
       (click)="returnItemsAndPrintRecipt()"
-      [pending]="returnItemsAndPrintReciptStatus() === 'pending'"
-      [disabled]="returnItemsAndPrintReciptStatus() === 'pending'"
+      [pending]="returnItemsAndPrintReciptStatusPending()"
+      [disabled]="returnItemsAndPrintReciptStatusPending()"
       data-what="button"
       data-which="return-and-print"
     >
diff --git a/libs/oms/feature/return-summary/src/lib/return-summary.component.spec.ts b/libs/oms/feature/return-summary/src/lib/return-summary.component.spec.ts
index 15bcbdafe..cd8b4d580 100644
--- a/libs/oms/feature/return-summary/src/lib/return-summary.component.spec.ts
+++ b/libs/oms/feature/return-summary/src/lib/return-summary.component.spec.ts
@@ -1,30 +1,30 @@
-import { createComponentFactory, Spectator } from '@ngneat/spectator/jest';
-import { MockComponent } from 'ng-mocks';
-import { ReturnSummaryComponent } from './return-summary.component';
+import { createComponentFactory, Spectator } from "@ngneat/spectator/jest";
+import { MockComponent } from "ng-mocks";
+import { ReturnSummaryComponent } from "./return-summary.component";
 import {
   ReturnProcess,
   ReturnProcessService,
   ReturnProcessStore,
-} from '@isa/oms/data-access';
-import { ReturnSummaryItemComponent } from './return-summary-item/return-summary-item.component';
-import { ActivatedRoute, Router } from '@angular/router';
+} from "@isa/oms/data-access";
+import { ReturnSummaryItemComponent } from "./return-summary-item/return-summary-item.component";
+import { ActivatedRoute, Router } from "@angular/router";
 
-jest.mock('@isa/core/process', () => ({
+jest.mock("@isa/core/process", () => ({
   injectActivatedProcessId: () => jest.fn(() => 1),
 }));
 
 const MOCK_RETURN_PROCESSES: ReturnProcess[] = [
-  { id: 1, processId: 1, productCategory: 'Electronics' } as ReturnProcess,
-  { id: 2, processId: 1, productCategory: 'Books' } as ReturnProcess,
-  { id: 3, processId: 2, productCategory: 'Clothing' } as ReturnProcess,
-  { id: 4, processId: 2, productCategory: 'Home Goods' } as ReturnProcess,
-  { id: 5, processId: 3, productCategory: 'Electronics' } as ReturnProcess,
-  { id: 6, processId: 3, productCategory: 'Toys' } as ReturnProcess,
-  { id: 7, processId: 4, productCategory: 'Books' } as ReturnProcess,
-  { id: 8, processId: 4, productCategory: 'Garden' } as ReturnProcess,
+  { id: 1, processId: 1, productCategory: "Electronics" } as ReturnProcess,
+  { id: 2, processId: 1, productCategory: "Books" } as ReturnProcess,
+  { id: 3, processId: 2, productCategory: "Clothing" } as ReturnProcess,
+  { id: 4, processId: 2, productCategory: "Home Goods" } as ReturnProcess,
+  { id: 5, processId: 3, productCategory: "Electronics" } as ReturnProcess,
+  { id: 6, processId: 3, productCategory: "Toys" } as ReturnProcess,
+  { id: 7, processId: 4, productCategory: "Books" } as ReturnProcess,
+  { id: 8, processId: 4, productCategory: "Garden" } as ReturnProcess,
 ];
 
-describe('ReturnSummaryComponent', () => {
+describe("ReturnSummaryComponent", () => {
   let spectator: Spectator<ReturnSummaryComponent>;
   // Use createComponentFactory for standalone components
   const createComponent = createComponentFactory({
@@ -47,17 +47,17 @@ describe('ReturnSummaryComponent', () => {
     });
   });
 
-  it('should create the component', () => {
+  it("should create the component", () => {
     // Assert: Check if the component instance was created successfully
     expect(spectator.component).toBeTruthy();
   });
 
-  it('should have a defined processId', () => {
+  it("should have a defined processId", () => {
     // Assert: Check if the processId is defined
     expect(spectator.component.processId()).toBeTruthy();
   });
 
-  it('should have two return processes', () => {
+  it("should have two return processes", () => {
     // Arrange:
     const mockReturnProcesses: ReturnProcess[] = [
       MOCK_RETURN_PROCESSES[0],
@@ -72,14 +72,14 @@ describe('ReturnSummaryComponent', () => {
     expect(returnProcesses).toEqual(mockReturnProcesses);
   });
 
-  it('should render the return summary item component', () => {
+  it("should render the return summary item component", () => {
     // Arrange:
     const mockReturnProcesses: ReturnProcess[] = [
       MOCK_RETURN_PROCESSES[0],
       MOCK_RETURN_PROCESSES[1],
     ];
     jest
-      .spyOn(spectator.component, 'returnProcesses')
+      .spyOn(spectator.component, "returnProcesses")
       .mockReturnValue(mockReturnProcesses);
 
     // Act: Trigger change detection
@@ -91,14 +91,14 @@ describe('ReturnSummaryComponent', () => {
     expect(returnSummaryItems.length).toBe(mockReturnProcesses.length);
   });
 
-  it('should set the returnProcess input correctly', () => {
+  it("should set the returnProcess input correctly", () => {
     // Arrange:
     const mockReturnProcesses: ReturnProcess[] = [
       MOCK_RETURN_PROCESSES[0],
       MOCK_RETURN_PROCESSES[1],
     ];
     jest
-      .spyOn(spectator.component, 'returnProcesses')
+      .spyOn(spectator.component, "returnProcesses")
       .mockReturnValue(mockReturnProcesses);
 
     // Act: Trigger change detection
@@ -110,7 +110,7 @@ describe('ReturnSummaryComponent', () => {
     expect(returnSummaryItems[1].returnProcess).toEqual(mockReturnProcesses[1]);
   });
 
-  it('should have proper E2E testing attributes', () => {
+  it("should have proper E2E testing attributes", () => {
     // Arrange
     const mockReturnProcesses: ReturnProcess[] = [
       MOCK_RETURN_PROCESSES[0], // id: 1, processId: 1, category: 'Electronics'
@@ -118,7 +118,7 @@ describe('ReturnSummaryComponent', () => {
     ];
 
     jest
-      .spyOn(spectator.component, 'returnProcesses')
+      .spyOn(spectator.component, "returnProcesses")
       .mockReturnValue(mockReturnProcesses);
 
     // Act
@@ -128,57 +128,57 @@ describe('ReturnSummaryComponent', () => {
     // Check heading attributes
     const heading = spectator.query('[data-what="heading"]');
     expect(heading).toBeTruthy();
-    expect(heading).toHaveAttribute('data-which', 'return-summary-title');
+    expect(heading).toHaveAttribute("data-which", "return-summary-title");
 
     // Check container attributes
     const container = spectator.query('[data-what="container"]');
     expect(container).toBeTruthy();
-    expect(container).toHaveAttribute('data-which', 'return-items-list');
+    expect(container).toHaveAttribute("data-which", "return-items-list");
 
     // Check list item attributes
-    const listItems = spectator.queryAll('oms-feature-return-summary-item');
+    const listItems = spectator.queryAll("oms-feature-return-summary-item");
     expect(listItems.length).toBe(mockReturnProcesses.length);
 
     // Check attributes for the first item
-    expect(listItems[0]).toHaveAttribute('data-what', 'list-item');
-    expect(listItems[0]).toHaveAttribute('data-which', 'return-process-item');
+    expect(listItems[0]).toHaveAttribute("data-what", "list-item");
+    expect(listItems[0]).toHaveAttribute("data-which", "return-process-item");
     expect(listItems[0]).toHaveAttribute(
-      'data-item-id',
+      "data-item-id",
       `${mockReturnProcesses[0].id}`,
     );
 
     expect(listItems[0]).toHaveAttribute(
-      'data-item-category',
+      "data-item-category",
       mockReturnProcesses[0].productCategory,
     );
 
     // Check attributes for the second item
-    expect(listItems[1]).toHaveAttribute('data-what', 'list-item');
-    expect(listItems[1]).toHaveAttribute('data-which', 'return-process-item');
+    expect(listItems[1]).toHaveAttribute("data-what", "list-item");
+    expect(listItems[1]).toHaveAttribute("data-which", "return-process-item");
     expect(listItems[1]).toHaveAttribute(
-      'data-item-id',
+      "data-item-id",
       `${mockReturnProcesses[1].id}`,
     );
     expect(listItems[1]).toHaveAttribute(
-      'data-item-category',
+      "data-item-category",
       `${mockReturnProcesses[1].productCategory}`,
     );
     expect(listItems[1]).toHaveAttribute(
-      'data-item-category',
+      "data-item-category",
       mockReturnProcesses[1].productCategory,
     );
 
     // Check button attributes
     const button = spectator.query('[data-what="button"]');
     expect(button).toBeTruthy();
-    expect(button).toHaveAttribute('data-which', 'return-and-print');
+    expect(button).toHaveAttribute("data-which", "return-and-print");
   });
 
-  it('should call returnItemsAndPrintRecipt when button is clicked', () => {
+  it("should call returnItemsAndPrintRecipt when button is clicked", () => {
     // Arrange: Spy on the returnItemsAndPrintRecipt method
     const returnItemsAndPrintReciptSpy = jest.spyOn(
       spectator.component,
-      'returnItemsAndPrintRecipt',
+      "returnItemsAndPrintRecipt",
     );
 
     // Act: Trigger button click
diff --git a/libs/oms/feature/return-summary/src/lib/return-summary.component.ts b/libs/oms/feature/return-summary/src/lib/return-summary.component.ts
index 92ede7e27..45102d267 100644
--- a/libs/oms/feature/return-summary/src/lib/return-summary.component.ts
+++ b/libs/oms/feature/return-summary/src/lib/return-summary.component.ts
@@ -4,20 +4,20 @@ import {
   computed,
   inject,
   signal,
-} from '@angular/core';
-import { ReturnSummaryItemComponent } from './return-summary-item/return-summary-item.component';
-import { injectActivatedProcessId } from '@isa/core/process';
+} from "@angular/core";
+import { ReturnSummaryItemComponent } from "./return-summary-item/return-summary-item.component";
+import { injectActivatedProcessId } from "@isa/core/process";
 import {
   ReturnProcess,
   ReturnProcessService,
   ReturnProcessStore,
-} from '@isa/oms/data-access';
-import { ButtonComponent } from '@isa/ui/buttons';
-import { NgIcon, provideIcons } from '@ng-icons/core';
-import { Location } from '@angular/common';
-import { isaActionChevronLeft } from '@isa/icons';
-import { logger } from '@isa/core/logging';
-import { ActivatedRoute, Router } from '@angular/router';
+} from "@isa/oms/data-access";
+import { ButtonComponent } from "@isa/ui/buttons";
+import { NgIcon, provideIcons } from "@ng-icons/core";
+import { Location } from "@angular/common";
+import { isaActionChevronLeft } from "@isa/icons";
+import { logger } from "@isa/core/logging";
+import { ActivatedRoute, Router } from "@angular/router";
 
 /**
  * Main component for the return summary feature. Displays a list of items being returned
@@ -35,9 +35,9 @@ import { ActivatedRoute, Router } from '@angular/router';
  * ```
  */
 @Component({
-  selector: 'oms-feature-return-summary',
-  templateUrl: './return-summary.component.html',
-  styleUrls: ['./return-summary.component.scss'],
+  selector: "oms-feature-return-summary",
+  templateUrl: "./return-summary.component.html",
+  styleUrls: ["./return-summary.component.scss"],
   changeDetection: ChangeDetectionStrategy.OnPush,
   imports: [ReturnSummaryItemComponent, ButtonComponent, NgIcon],
   providers: [provideIcons({ isaActionChevronLeft })],
@@ -74,9 +74,21 @@ export class ReturnSummaryComponent {
    * - 'error': Operation failed
    */
   returnItemsAndPrintReciptStatus = signal<
-    undefined | 'pending' | 'success' | 'error'
+    undefined | "pending" | "success" | "error"
   >(undefined);
 
+  /**
+   * Computed signal to determine if the return items and print receipt operation is pending.
+   *
+   * This signal checks the current status of the returnItemsAndPrintReciptStatus signal
+   * and returns true if the status is 'pending', otherwise false.
+   *
+   * @returns {boolean} True if the operation is pending, false otherwise
+   */
+  returnItemsAndPrintReciptStatusPending = computed(() => {
+    return this.returnItemsAndPrintReciptStatus() === "pending";
+  });
+
   /**
    * Handles the return and print process for multiple items.
    *
@@ -93,35 +105,35 @@ export class ReturnSummaryComponent {
    * @returns {Promise<void>}
    */
   async returnItemsAndPrintRecipt() {
-    if (this.returnItemsAndPrintReciptStatus() === 'pending') {
-      this.#logger.warn('Return process already in progress', () => ({
-        function: 'returnItemsAndPrintRecipt',
+    if (this.returnItemsAndPrintReciptStatus() === "pending") {
+      this.#logger.warn("Return process already in progress", () => ({
+        function: "returnItemsAndPrintRecipt",
       }));
       return;
     }
 
     try {
-      this.returnItemsAndPrintReciptStatus.set('pending');
+      this.returnItemsAndPrintReciptStatus.set("pending");
 
       const returnReceipts =
         await this.#returnProcessService.completeReturnProcess(
           this.returnProcesses(),
         );
 
-      this.#logger.info('Return receipts created', () => ({
+      this.#logger.info("Return receipts created", () => ({
         count: returnReceipts.length,
       }));
-      this.returnItemsAndPrintReciptStatus.set('success');
+      this.returnItemsAndPrintReciptStatus.set("success");
 
       this.#returnProcessStore.finishProcess(returnReceipts);
-      await this.#router.navigate(['../', 'review'], {
+      await this.#router.navigate(["../", "review"], {
         relativeTo: this.#activatedRoute,
       });
     } catch (error) {
-      this.#logger.error('Error completing return process', error, () => ({
-        function: 'returnItemsAndPrintRecipt',
+      this.#logger.error("Error completing return process", error, () => ({
+        function: "returnItemsAndPrintRecipt",
       }));
-      this.returnItemsAndPrintReciptStatus.set('error');
+      this.returnItemsAndPrintReciptStatus.set("error");
     }
   }
 }