--- panel/panel-window.c.orig  2015-02-28 15:52:27.000000000 +0100
+++ panel/panel-window.c       2015-12-22 16:35:44.073877284 +0100
@@ -1543,6 +1543,10 @@
       || window->struts_disabled)
     return STRUTS_EDGE_NONE;
 
+  /* first, let's make sure we are working upon
+   *      currently updated snap_position: */
+    window->snap_position = panel_window_snap_position (window);
+
   /* return the screen edge on which the window is
    * visually snapped and where the struts are set */
   switch (window->snap_position)