New Stable 10.1 bug with backup

[baragoon]

HI, I'm running MiPad4 with stable firmware xiaomi.eu_multi_MIPAD4_V10.1.1.0.ODJCNFI_v10-8.1 and observing "settings" app crash when tap to "settings" - " Additional settings" - "Backup & reset" - "Back up my data".
Settings crashed with next error:

java.lang.ClassCastException: com.android.settings.MiuiSettings cannot be cast to com.android.settings.br
at com.android.settings.backup.ToggleBackupSettingFragment.onViewCreated(Unknown Source:8)
at android.app.FragmentManagerImpl.moveToState(Unknown Source:677)
at android.app.FragmentManagerImpl.addAddedFragments(Unknown Source:44)
at android.app.FragmentManagerImpl.executeOpsTogether(Unknown Source:155)
at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(Unknown Source:110)
at android.app.FragmentManagerImpl.execPendingActions(Unknown Source:21)
at android.app.FragmentManagerImpl$1.run(Unknown Source:2)
at android.os.Handler.handleCallback(Unknown Source:2)
at android.os.Handler.dispatchMessage(Unknown Source:4)
at android.os.Looper.loop(Unknown Source:139)
at android.app.ActivityThread.main(Unknown Source:65)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(Unknown Source:11)
at com.android.internal.os.ZygoteInit.main(Unknown Source:338)