Too bad it didn't fix the AndroidX crash

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

@@ -476,8 +476,6 @@ public class FragmentMessages extends FragmentBase {
 
     @Override
     public void onDestroy() {
-        if (selectionPredicate != null)
-            selectionPredicate.destroy();
         selectionTracker = null;
         super.onDestroy();
     }

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

@@ -25,12 +25,10 @@ import androidx.recyclerview.widget.RecyclerView;
 
 public class SelectionPredicateMessage extends SelectionTracker.SelectionPredicate<Long> {
     private boolean enabled;
-    private boolean destroyed;
     private RecyclerView recyclerView;
 
     SelectionPredicateMessage(RecyclerView recyclerView) {
         this.enabled = true;
-        this.destroyed = false;
         this.recyclerView = recyclerView;
     }
 
@@ -38,10 +36,6 @@ public class SelectionPredicateMessage extends SelectionTracker.SelectionPredica
         this.enabled = enabled;
     }
 
-    void destroy() {
-        this.destroyed = true;
-    }
-
     @Override
     public boolean canSetStateForKey(@NonNull Long key, boolean nextState) {
         if (!enabled)
@@ -72,6 +66,6 @@ public class SelectionPredicateMessage extends SelectionTracker.SelectionPredica
 
     @Override
     public boolean canSelectMultiple() {
-        return !destroyed;
+        return true;
     }
 }