Ticket #15194: 15194.patch

wp-admin/admin-ajax.php

@@ -577 +577 @@
         $x->add( array(
                 'what' => 'term',
                 'position' => $level,
-                'supplemental' => $tag
+                'supplemental' => (array) $tag
                 ) );
         $x->send();
         break;