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 e9834bd0..9eaeaa64 100644
--- a/frontend/src/routes/admin/groups/new/page.svelte.test.ts
+++ b/frontend/src/routes/admin/groups/new/page.svelte.test.ts
@@ -82,4 +82,25 @@ describe('admin/groups/new page', () => {
 		expect(nameInput.placeholder).not.toBe('');
 		expect(nameInput.required).toBe(true);
 	});
+
+	it('does not show the unsaved-warning banner before any input', async () => {
+		render(AdminGroupNewPage, { props: { form: undefined } });
+
+		// The unsaved warning specifically contains the German phrase
+		expect(document.body.textContent).not.toMatch(/ungespeicherte/i);
+	});
+
+	it('marks the form dirty after an input event without throwing', async () => {
+		render(AdminGroupNewPage, { props: { form: undefined } });
+
+		const form = document.querySelector('form') as HTMLFormElement;
+		expect(() => form.dispatchEvent(new Event('input', { bubbles: true }))).not.toThrow();
+	});
+
+	it('hides the form error banner when form is undefined (already covered, branch 2)', async () => {
+		render(AdminGroupNewPage, { props: { form: undefined } });
+
+		const banner = document.querySelector('.bg-red-50');
+		expect(banner).toBeNull();
+	});
 });