Upgrading to 11.0.0+ causes user to get logged out.

[JCsplash]

Description

When upgrading our firebase iOS SDK to version 11.0.0, 11.1.0, 11.2.0, 11.3.0, 11.4.0, 11.4.1 or 11.4.2, previously logged in users get logged out. However when upgrading to version 10.29.0, users remain logged in. Our app has ~200K daily active users and it wouldn't be feasible to have them all log out and re-login.

Here's some additional information for @ncooke3 and the team:

• iOS is our only platform using the Firebase iOS SDK.
• No access group sare used anywhere Auth.auth().useUserAccessGroup(_ accessGroup: String)
• No icloud sharing is used anywhere Auth.auth(). shareAuthStateAcrossDevices = true

We're currently on v8.8.0 and want to upgrade to the latest but if this issue doesn't get fixed we may have to just settle for 10.29.0. Is there any chance this could be fixed in an upcoming release? Any help would be very much appreciated!

Reproducing the issue

Steps to Reproduce:

1. Use firebase auth to log in using a pre-v.11.0.0 SDK
2. Upgrade the SDK to any version 11.0.0 or above.
3. Notice that the user gets logged out.

Firebase SDK Version

11.0.0, 11.1.0. 11.2.0, 11.3.0, 11.4.0, 11.4.1, 11.4.2

Xcode Version

15.3

Installation Method

CocoaPods

Firebase Product(s)

Authentication

Targeted Platforms

iOS

Relevant Log Output

No response

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[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.

[paulb777]

Thanks for reporting the issue. To be clear, do you see the issue both when updating from 8.8.0 and from 10.29.0 to 11.x? Which sign in provider are you using?

[JCsplash]

@paulb777 Yes, both from 8.8.0 → 11.x and from 10.29.0 → 11.x - Log out issue happens for all 3 of our providers Apple, Google and Facebook.

I was hoping 10.29.0 → 11.x would fix it but it does not. Only 8.8.0 → 10.29.0 works fine.