diff --git a/frontend/src/lib/components/PersonMentionEditor.svelte.spec.ts b/frontend/src/lib/components/PersonMentionEditor.svelte.spec.ts
index a0c77395..ea8df7fe 100644
--- a/frontend/src/lib/components/PersonMentionEditor.svelte.spec.ts
+++ b/frontend/src/lib/components/PersonMentionEditor.svelte.spec.ts
@@ -52,6 +52,12 @@ function mockFetchEmpty() {
 	return fetchMock;
 }
 
+function mockFetchRejects() {
+	const fetchMock = vi.fn().mockRejectedValue(new TypeError('Failed to fetch'));
+	vi.stubGlobal('fetch', fetchMock);
+	return fetchMock;
+}
+
 function getTextarea(): HTMLTextAreaElement {
 	return document.querySelector('textarea')!;
 }
@@ -182,6 +188,21 @@ describe('PersonMentionEditor — typeahead', () => {
 		await expect.element(page.getByText('Keine Personen gefunden')).toBeInTheDocument();
 	});
 
+	it('falls back to the empty state when the typeahead fetch rejects (network error)', async () => {
+		mockFetchRejects();
+		renderHost();
+
+		const ta = getTextarea();
+		ta.focus();
+		ta.value = '@Aug';
+		ta.selectionStart = 4;
+		ta.selectionEnd = 4;
+		ta.dispatchEvent(new Event('input', { bubbles: true }));
+		await flushDebounce();
+
+		await expect.element(page.getByText('Keine Personen gefunden')).toBeInTheDocument();
+	});
+
 	it('keeps the popup open when the query has a trailing space (multi-word names)', async () => {
 		mockFetchWithPersons();
 		renderHost();