If appVersion is added as a custom attribute, when app upgrades but is relaunched while offline, unknown feature flag error happens

[anawu2006]

Is this a support request?
No.

Describe the bug
In our Android app, we add appVersion as a custom attribute of LDUser, and apparently this data is being used as part of the flag store id. Because of this, each time when app upgrades, a new flag store is created. If app upgrades but is relaunched while offline, since a new flag store is being used and there is no flags in it yet, unknown feature flag error will happen when getting flag values.

To reproduce

1. add appVersion as a custom attribute of LDUser;
2. launch the app and have all feature flags synced from cloud;
3. upgrade app to a new version;
4. put device to offline;
5. relaunch app.

Expected behavior
Same flag store is being used after app version changed.

SDK version
Android SDK 3.1.1

Language version, developer tools
Android Kotlin

OS/platform
Android API 31

Additional context
I am not sure if this is a bug or a feature. But is there any way I can have appVersion without affecting the flag store identifier?

[maxkohne]

We ran into the same thing and reported it here in this issue. #150

[anawu2006]

We ran into the same thing and reported it here in this issue. #150

ah, thank you so much for pointing this out! I will just close this one and follow the status in #150. Seems the fix won't be ready any time soon though.