Ticket #14390: 14390.diff

wp-includes/media.php

@@ -781 +781 @@
                 'columns'    => 3,
                 'size'       => 'thumbnail',
                 'include'    => '',
-                'exclude'    => ''
+                'exclude'    => get_post_thumbnail_id()
         ), $attr));
 
         $id = intval($id);