Ticket #18040: 18040.diff

wp-includes/post.php

@@ -985 +985 @@
                 $wp->add_query_var($args->query_var);
         }
 
-        if ( false !== $args->rewrite && '' != get_option('permalink_structure') ) {
+        if ( false !== $args->rewrite && ( is_admin() || '' != get_option('permalink_structure') ) ) {
                 if ( ! is_array( $args->rewrite ) )
                         $args->rewrite = array();
                 if ( empty( $args->rewrite['slug'] ) )