Fix the fix

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

@@ -3601,14 +3601,19 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             mMainThreadExecutor.setAccessible(true);
             mMainThreadExecutor.set(this.differ, new Executor() {
                 @Override
-                public void execute(Runnable command) {
+                public void execute(final Runnable command) {
+                    handler.post(new Runnable() {
+                        @Override
+                        public void run() {
                             try {
-                        handler.post(command);
+                                command.run();
                             } catch (Throwable ex) {
                                 Log.e(ex);
                             }
                         }
                     });
+                }
+            });
         } catch (Throwable ex) {
             Log.e(ex);
         }