Ticket #11465: 11465.4.diff

src/wp-admin/includes/ajax-actions.php"

@@ -1636 +1636 @@
                                 gmdate( __( 'g:i a' ), $now )
                         );
 
+                        /* this is to avoid adding the meta twice */
+                        $_tmp_post = $_POST;
+                        unset( $_POST[ 'metakeyselect' ] );
+                        unset( $_POST[ 'metakeyinput' ] );
+
                         $pid = edit_post( $post_data );
+                        
+                        $_POST = $_tmp_post;
 
                         if ( $pid ) {
                                 if ( is_wp_error( $pid ) ) {