IOS15.2 and xCode 13 - background crash app

[marencod]

IOS 15.2
xCode 13
Firebase

I have a problem that has stopped the deployment on the apple store.
the application works fine except when it goes in the background (with IOS14 this does not happen)
more precisely just a few seconds after it enters the background:

but the application doesn’t really crash (it just looks like bad reporting or a constraint introduced by apple on applications)

I tried to introduce, recommended on a forum but nothing

and also to downgrade xcode to 12.5 but I haven’t solved it.

any ideas? please

[petarpejovic]

I have the same issue but when I close the app. Same for me, its related only to iOS 15.0.
It seems to be an issue with UnityCleanup().

iOS 15.0
Unity 2019.4.20f1
xCode 12.4
Firebase 8.1.0