Index: plugins/windowlist/windowlist.c
===================================================================
--- plugins/windowlist/windowlist.c	(revision 23133)
+++ plugins/windowlist/windowlist.c	(working copy)
@@ -205,6 +205,9 @@
     else if (ev->button == 3) /* Show the popup menu */
     {
         popup_action_menu (mi, window);
+        
+        /* the right-click menu will popdown the menu */
+        return TRUE;
     }
 
     return FALSE;