Firestore onSnapshot() or get() stucked on app restart - same as 5058

[L1b3rtyy]

Same as #5058

I am creating a new issue as 5058 is locked.

My setup has slightly evolved but the issue is exactly the same:
Operating System version: _____ iOS 15.0
Browser version: _____ Safari 15.0
Firebase SDK version: _____ 9.2.0
Firebase Product: _____ Firestore, using the compat version

After restarting my app, a call to get() or onSnapshot() will never return a document that I know exist. Killing the app and starting from scratch will work.

The problem only occurs on iOS, all the other platforms I have tried work as expected:

• Windows 10 - Firefox, Chrome, Edge
• Ubuntu - Chrome, Opera
• Mac - Safari
• Android - Chrome

And here are the logs I have now:

LOG - [2021-11-11T18:17:48.490Z] @firebase/firestore:Firestore (9.2.0): SimpleDb|Opening database:firestore/[DEFAULT]/fireauthentest/main
LOG - [2021-11-11T18:17:48.489Z] @firebase/firestore:Firestore (9.2.0): IndexedDbPersistence|Starting transaction:updateClientMetadataAndTryBecomePrimary
LOG - [2021-11-11T18:17:48.480Z] @firebase/firestore:Firestore (9.2.0): FirestoreClient|Initializing OfflineComponentProvider
LOG - [2021-11-11T18:17:48.441Z] @firebase/firestore:Firestore (9.2.0): FirestoreClient|Received user=ZZNtKb3byiQsrHZ4I4A3IyfDZWL2

Fyi, I can now reproduce the issue on my app (but not on a mini repo unfortunately) so I can try to pull more info or logs for you if you tell me how to get them

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[ehsannas]

Hi @olivierkrener , Thanks for reporting.

Are you seeing this issue only when using Safari 15 on iOS? There was an issue specific to Safari 15 that just got fixed (#5716).

[L1b3rtyy]

Yes I am using Sarai 15 on iOS but note that #5058 was on Safari 14.4.2 and was showing exactly the same issue. In what release will #5716 be merged so I can test it?

[ehsannas]

This particular issue also existed in Safari 14 (#4076). It is a bug in Safari; we placed a workaround for Safari 14 in late July, and we added the same workaround for Safari 15 a couple of days ago. #5716 should be picked up by the next release.

[L1b3rtyy]

This sounds great. I will be monitoring the release notes.

I see in the comments of #4076 that calling firestore.terminate() before reloading the app seems to solve the issue. Is it worth me trying?

[ehsannas]

I think it's worth trying to see if this workaround works for you while you wait for the next release.

[L1b3rtyy]

I can confirm that this workaround works on my two test iOS devices (running on Safari 12 and 15)