Revert ShellWindow changes

Author: lenemter

src/ShellClients/ShellWindow.vala

@@ -76,11 +76,16 @@ public abstract class Gala.ShellWindow : PositionedWindow, GestureTarget {
             }
         }
 
+        unowned var manager = ShellClientsManager.get_instance ();
         window.foreach_transient ((transient) => {
-            if (!Utils.get_window_is_normal (window)) {
-                ((Meta.WindowActor) transient.get_compositor_private ()).visible = visible && !animating;
+            if (manager.is_itself_positioned (transient)) {
+                return true;
             }
 
+            unowned var transient_window_actor = (Meta.WindowActor) transient.get_compositor_private ();
+
+            transient_window_actor.visible = visible && !animating;
+
             return true;
         });
     }