[3.5.0RC2] IllegalStateException via AuthenticatorActivity.checkBasicAuthorization

[AndyScherzinger]

GPlay:

java.lang.IllegalStateException: 
  at androidx.fragment.app.FragmentManagerImpl.checkStateLoss (FragmentManager.java:2080)
  at androidx.fragment.app.FragmentManagerImpl.enqueueAction (FragmentManager.java:2106)
  at androidx.fragment.app.BackStackRecord.commitInternal (BackStackRecord.java:683)
  at androidx.fragment.app.BackStackRecord.commit (BackStackRecord.java:637)
  at androidx.fragment.app.DialogFragment.show (DialogFragment.java:144)
  at com.owncloud.android.authentication.AuthenticatorActivity.checkBasicAuthorization (AuthenticatorActivity.java:1307)
  at com.owncloud.android.authentication.AuthenticatorActivity.onGetServerInfoFinish (AuthenticatorActivity.java:1480)
  at com.owncloud.android.authentication.AuthenticatorActivity.onRemoteOperationFinish (AuthenticatorActivity.java:1381)
  at com.owncloud.android.services.OperationsService.lambda$dispatchResultToOperationListeners$0 (OperationsService.java:748)
  at com.owncloud.android.services.-$$Lambda$OperationsService$2BVgsxDpOpa4JqgzeD7OGZBLSiI.run (Unknown Source:6)
  at android.os.Handler.handleCallback (Handler.java:789)
  at android.os.Handler.dispatchMessage (Handler.java:98)
  at android.os.Looper.loop (Looper.java:251)
  at android.app.ActivityThread.main (ActivityThread.java:6589)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:240)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:767)

[nextcloud-android-bot]

GitMate.io thinks possibly related issues are #1992 (IllegalStateException), #380 (IllegalStateException), #3559 ([3.5.0RC1] IllegalArgumentException via AuthenticatorActivity.parseLoginDataUrl), #3509 (3.5.0 RC1), and #3560 ([3.5.0RC2] NPE via PreviewImageFragment.togglePreviewImageFullScreen).

[tobiasKaminsky]

Yeah :/
I saw this a few times before. It is somehow related to the "waiting to login" spinner dialog, which cannot be dismissed, as the content of the activity changed.
But I never could reproduce it.

How often does this happen?

[AndyScherzinger]

reported within 3.5.0 RC2, the 2nd place in the crash list.

[tobiasKaminsky]

Exception message is from here:

if (isStateSaved()) {
  throw new IllegalStateException("Can not perform this action after onSaveInstanceState");
}