Prevent crash

app/src/main/java/eu/faircode/email/ActivityView.java

@@ -708,6 +708,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
     }
 
     private void onMenuFolders(long account) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED))
             getSupportFragmentManager().popBackStack("unified", 0);
 
         Bundle args = new Bundle();
@@ -790,7 +791,9 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
     }
 
     private void onShowLog() {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED))
             getSupportFragmentManager().popBackStack("logs", FragmentManager.POP_BACK_STACK_INCLUSIVE);
+
         FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
         fragmentTransaction.replace(R.id.content_frame, new FragmentLogs()).addToBackStack("logs");
         fragmentTransaction.commit();
@@ -1081,6 +1084,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
     }
 
     private void onViewThread(Intent intent) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED))
             getSupportFragmentManager().popBackStack("thread", FragmentManager.POP_BACK_STACK_INCLUSIVE);
 
         Bundle args = new Bundle();

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -1135,6 +1135,7 @@ public class FragmentMessages extends FragmentEx {
     }
 
     private void onMenuFolders() {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED))
             getFragmentManager().popBackStack("unified", 0);
 
         Bundle args = new Bundle();