Hi all looking for guidance on an intermittent Firebase Auth issue.

What’s happening

• Some users open the app and remain stuck on the loading screen.
• onIdTokenChanged and onAuthStateChanged never fire (no logs).
• We wrapped setPersistence(Auth.Persistence.LOCAL) with .then/.catch logs—neither handler ever runs, indicating the Promise stays “pending”.
• firebase.auth().currentUser is logged right before the listener is attached, so the code path is reached.

this.firebaseAuth
  .setPersistence(Auth.Persistence.LOCAL)
  .then(() => console.log('[Auth] persistence set'))      // never prints
  .catch(err => console.error('[Auth] persistence error', err)); // never prints

Why we suspect IndexedDB

setPersistence(LOCAL) relies on IndexedDB. If the database open hangs, the Promise never settles and no auth events fire.

Environment

Questions

1. Is a never-resolving setPersistence() Promise a known issue?
2. Recommended ways to detect or recover from this state?
3. Would upgrading to Firebase v9+ likely help?

Any insights or similar experiences would be greatly appreciated. Thank you!