diff --git a/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.spec.ts b/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.spec.ts
new file mode 100644
index 00000000..9b3794d2
--- /dev/null
+++ b/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.spec.ts
@@ -0,0 +1,107 @@
+import { CdkDrag, CdkDragHandle } from '@angular/cdk/drag-drop'
+import { Component } from '@angular/core'
+import { ComponentFixture, TestBed } from '@angular/core/testing'
+import { By } from '@angular/platform-browser'
+import { provideNoopAnimations } from '@angular/platform-browser/animations'
+import { MatDialog, MatDialogModule } from '@angular/material/dialog'
+import { DraggableDialogDirective, provideDraggableDialogRootElementSelector } from './draggable-dialog.directive'
+
+@Component({
+    template: `
+        <div ppwDraggableDialog>
+            <h2 cdkDragHandle mat-dialog-title>Draggable dialog</h2>
+        </div>
+    `,
+    imports: [CdkDragHandle, DraggableDialogDirective, MatDialogModule]
+})
+class TestDraggableDialogComponent {}
+
+@Component({
+    template: `
+        <div ppwDraggableDialog [ppwDraggableDialogRootElementSelector]="rootElementSelector">
+            <h2 cdkDragHandle>Draggable dialog</h2>
+        </div>
+    `,
+    imports: [CdkDragHandle, DraggableDialogDirective]
+})
+class TestConfiguredDraggableDialogComponent {
+    rootElementSelector = '.custom-dialog-root'
+}
+
+describe('DraggableDialogDirective', () => {
+    afterEach(() => {
+        TestBed.inject(MatDialog, null)?.closeAll()
+        document.querySelectorAll('.cdk-overlay-container').forEach((element) => element.remove())
+    })
+
+    it('should use the CDK overlay pane as drag root by default', () => {
+        const fixture = createComponent(TestDraggableDialogComponent)
+        const cdkDrag = fixture.debugElement.query(By.directive(CdkDrag)).injector.get(CdkDrag)
+
+        expect(cdkDrag.rootElementSelector).toBe('.cdk-overlay-pane')
+    })
+
+    it('should allow configuring the drag root selector', () => {
+        const fixture = createComponent(TestConfiguredDraggableDialogComponent)
+        const cdkDrag = fixture.debugElement.query(By.directive(CdkDrag)).injector.get(CdkDrag)
+
+        expect(cdkDrag.rootElementSelector).toBe('.custom-dialog-root')
+    })
+
+    it('should allow configuring the application default drag root selector', () => {
+        TestBed.configureTestingModule({
+            imports: [TestDraggableDialogComponent],
+            providers: [provideNoopAnimations(), provideDraggableDialogRootElementSelector('.application-dialog-root')]
+        })
+
+        const fixture = TestBed.createComponent(TestDraggableDialogComponent)
+        fixture.detectChanges()
+        const cdkDrag = fixture.debugElement.query(By.directive(CdkDrag)).injector.get(CdkDrag)
+
+        expect(cdkDrag.rootElementSelector).toBe('.application-dialog-root')
+    })
+
+    it('should start dragging an opened Material dialog without crashing', () => {
+        TestBed.configureTestingModule({
+            imports: [MatDialogModule, TestDraggableDialogComponent],
+            providers: [provideNoopAnimations()]
+        })
+
+        const dialog = TestBed.inject(MatDialog)
+        dialog.open(TestDraggableDialogComponent)
+
+        const handle = document.querySelector('h2') as HTMLElement
+        expect(handle).toBeTruthy()
+
+        expect(() => {
+            dispatchDragEvent(handle, 'mousedown', 10, 10)
+            dispatchDragEvent(document, 'mousemove', 40, 40)
+            dispatchDragEvent(document, 'mouseup', 40, 40)
+        }).not.toThrow()
+    })
+})
+
+function createComponent<T>(component: new () => T): ComponentFixture<T> {
+    TestBed.configureTestingModule({
+        imports: [component],
+        providers: [provideNoopAnimations()]
+    })
+
+    const fixture = TestBed.createComponent(component)
+    fixture.detectChanges()
+
+    return fixture
+}
+
+function dispatchDragEvent(target: EventTarget, type: string, clientX: number, clientY: number): void {
+    target.dispatchEvent(
+        new MouseEvent(type, {
+            bubbles: true,
+            cancelable: true,
+            clientX,
+            clientY,
+            button: 0,
+            buttons: type === 'mouseup' ? 0 : 1
+        })
+    )
+}
diff --git a/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.ts b/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.ts
index f2cc0966..f6110980 100644
--- a/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.ts
+++ b/projects/ppwcode/ng-dialogs/src/lib/directives/draggable-dialog.directive.ts
@@ -1,17 +1,31 @@
 import { CdkDrag } from '@angular/cdk/drag-drop'
-import { Directive, ElementRef, inject, OnInit, Renderer2 } from '@angular/core'
+import { Directive, ElementRef, inject, InjectionToken, input, OnInit, Renderer2, ValueProvider } from '@angular/core'
+
+export const DRAGGABLE_DIALOG_ROOT_ELEMENT_SELECTOR = new InjectionToken<string>(
+    'Draggable dialog root element selector',
+    { factory: () => '.cdk-overlay-pane' }
+)
+
+export const provideDraggableDialogRootElementSelector = (rootElementSelector: string): ValueProvider => ({
+    provide: DRAGGABLE_DIALOG_ROOT_ELEMENT_SELECTOR,
+    useValue: rootElementSelector
+})
 
 @Directive({
     selector: '[ppwDraggableDialog]',
     hostDirectives: [CdkDrag]
 })
 export class DraggableDialogDirective implements OnInit {
+    public readonly rootElementSelector = input(inject(DRAGGABLE_DIALOG_ROOT_ELEMENT_SELECTOR), {
+        alias: 'ppwDraggableDialogRootElementSelector'
+    })
+
     #el: ElementRef = inject(ElementRef)
     #renderer: Renderer2 = inject(Renderer2)
     #cdkDrag: CdkDrag = inject(CdkDrag)
 
     ngOnInit(): void {
         this.#renderer.addClass(this.#el.nativeElement, 'ppw-draggable-dialog')
-        this.#cdkDrag.rootElementSelector = '.cdk-overlay-pane'
+        this.#cdkDrag.rootElementSelector = this.rootElementSelector()
     }
 }