Prevent crash

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

@@ -8344,6 +8344,7 @@ public class FragmentMessages extends FragmentBase
     private OnBackPressedCallback backPressedCallback = new OnBackPressedCallback(true) {
         @Override
         public void handleOnBackPressed() {
+            try {
                 if (Helper.isKeyboardVisible(view)) {
                     Helper.hideKeyboard(view);
                     return;
@@ -8387,6 +8388,22 @@ public class FragmentMessages extends FragmentBase
                     ((ActivityBase) activity).onBackPressedFragment();
                 else
                     finish();
+            } catch (Throwable ex) {
+                Log.w(ex);
+                /*
+                    java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling eu.faircode.email.FixedRecyclerView{9095e62 VFED..... ........ 0,0-1440,2704 #7f0a0600 app:id/rvMessage}, adapter:eu.faircode.email.AdapterMessage@c71b6dc, layout:eu.faircode.email.FragmentMessages$11@58b3bf3, context:eu.faircode.email.ActivityView@9b77aad
+                            at androidx.recyclerview.widget.RecyclerView.assertNotInLayoutOrScroll(RecyclerView:3482)
+                            at androidx.recyclerview.widget.RecyclerView$RecyclerViewDataObserver.onItemRangeChanged(RecyclerView:6071)
+                            at androidx.recyclerview.widget.RecyclerView$AdapterDataObservable.notifyItemRangeChanged(RecyclerView:13219)
+                            at androidx.recyclerview.widget.RecyclerView$Adapter.notifyItemChanged(RecyclerView:8136)
+                            at androidx.recyclerview.selection.EventBridge$TrackerToAdapterBridge.onItemStateChanged(EventBridge:99)
+                            at androidx.recyclerview.selection.DefaultSelectionTracker.notifyItemStateChanged(DefaultSelectionTracker:439)
+                            at androidx.recyclerview.selection.DefaultSelectionTracker.notifySelectionCleared(DefaultSelectionTracker:451)
+                            at androidx.recyclerview.selection.DefaultSelectionTracker.clearPrimarySelection(DefaultSelectionTracker:182)
+                            at androidx.recyclerview.selection.DefaultSelectionTracker.clearSelection(DefaultSelectionTracker:170)
+                            at eu.faircode.email.FragmentMessages$130.handleOnBackPressed(FragmentMessages:8288)
+                 */
+            }
         }
     };