Ticket #26876: 26876.2.diff

src/wp-includes/widgets.php

@@ -211 +211 @@
          * @access private
          */
         public function _register() {
-                $settings = $this->get_settings();
+                $settings = false;
                 $empty = true;
 
+                // Prefetch settings only for widgets that are used (whether active or inactive)
+                if ( is_active_widget( false, false, $this->id_base, false ) ) { 
+                        $settings = $this->get_settings();
+                }
+
                 if ( is_array($settings) ) {
                         foreach ( array_keys($settings) as $number ) {
                                 if ( is_numeric($number) ) {