diff --git a/frontend/src/routes/admin/groups/new/page.svelte.test.ts b/frontend/src/routes/admin/groups/new/page.svelte.test.ts
index 9eaeaa64..d9841e91 100644
--- a/frontend/src/routes/admin/groups/new/page.svelte.test.ts
+++ b/frontend/src/routes/admin/groups/new/page.svelte.test.ts
@@ -90,11 +90,14 @@ describe('admin/groups/new page', () => {
 		expect(document.body.textContent).not.toMatch(/ungespeicherte/i);
 	});
 
-	it('marks the form dirty after an input event without throwing', async () => {
+	it('keeps the form mounted after an input event (oninput handler does not unmount)', async () => {
 		render(AdminGroupNewPage, { props: { form: undefined } });
 
 		const form = document.querySelector('form') as HTMLFormElement;
-		expect(() => form.dispatchEvent(new Event('input', { bubbles: true }))).not.toThrow();
+		expect(form).not.toBeNull();
+		form.dispatchEvent(new Event('input', { bubbles: true }));
+
+		expect(document.querySelector('form')).not.toBeNull();
 	});
 
 	it('hides the form error banner when form is undefined (already covered, branch 2)', async () => {