Small behavior improvement

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

@@ -1005,7 +1005,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             for (int i = 0; i < bnvActions.getMenu().size(); i++)
                 bnvActions.getMenu().getItem(i).setVisible(false);
 
-            ibFull.setVisibility(View.GONE);
+            ibFull.setVisibility(View.INVISIBLE);
             ibImages.setVisibility(View.GONE);
             ibUnsubscribe.setVisibility(message.unsubscribe == null ? View.GONE : View.VISIBLE);