diff --git a/apps/web/src/components/files/fileEditorLanguageReadiness.test.ts b/apps/web/src/components/files/fileEditorLanguageReadiness.test.ts
index 520c0fa82d0e0702a9dcfa9875a500ea11846dfe..927d963c459811044a0f36ea37ec1fd7e58188b5 100644
--- a/apps/web/src/components/files/fileEditorLanguageReadiness.test.ts
+++ b/apps/web/src/components/files/fileEditorLanguageReadiness.test.ts
@@ -116,6 +116,8 @@ afterEach(async () => {
   pool?.terminate();
   await Promise.all(terminationPromises);
   await disposeHighlighter();
+  // Drain the pool's final state broadcast before removing the animation frame stubs.
+  await new Promise<void>((resolve) => setImmediate(resolve));
   vi.unstubAllGlobals();
 });