diff --git a/tests/behavior/tests/comments/programmatic-tracked-change.spec.ts b/tests/behavior/tests/comments/programmatic-tracked-change.spec.ts
index a70299bac7..5bb8420cb4 100644
--- a/tests/behavior/tests/comments/programmatic-tracked-change.spec.ts
+++ b/tests/behavior/tests/comments/programmatic-tracked-change.spec.ts
@@ -60,7 +60,12 @@ test('tracked replace via document-api', async ({ superdoc }) => {
   assertMutationSucceeded('replaceText', receipt);
   await superdoc.waitForStable();
 
-  await expect.poll(() => getDocumentText(superdoc.page)).toContain('new fancy');
+  // word-diff (PR #2817) fragments multi-word tracked replacements into per-word
+  // insert/delete pairs, so "new fancy" appears as two separate inserts around
+  // the surviving space token. Assert both inserted words are present rather
+  // than a contiguous substring, which was the pre-word-diff assumption.
+  await expect.poll(() => getDocumentText(superdoc.page)).toContain('new');
+  await expect.poll(() => getDocumentText(superdoc.page)).toContain('fancy');
   await assertTrackChangeTypeCount(superdoc, 'insert');
 
   await superdoc.snapshot('programmatic-tc-replaced');