Ticket #63224: 63224.patch

src/wp-admin/site-editor.php

@@ -31 +31 @@
  */
 function _wp_get_site_editor_redirection_url() {
         global $pagenow;
-        if ( 'site-editor.php' !== $pagenow || isset( $_REQUEST['p'] ) || ! $_SERVER['QUERY_STRING'] ) {
+        if ( 'site-editor.php' !== $pagenow || isset( $_REQUEST['p'] ) || empty( $_SERVER['QUERY_STRING'] ) ) {
                 return false;
         }