Ticket #40444: 40444.patch

src/wp-includes/rest-api/class-wp-rest-server.php

@@ -251 +251 @@
                  */
                 $send_no_cache_headers = apply_filters( 'rest_send_nocache_headers', is_user_logged_in() );
                 if ( $send_no_cache_headers ) {
-                        foreach ( wp_get_nocache_headers() as $header => $header_value ) {
-                                $this->send_header( $header, $header_value );
-                        }
+                        nocache_headers();
                 }
 
                 /**