Ticket #39132: 39132.diff

src/wp-includes/load.php

@@ -479 +479 @@
                         if ( function_exists( 'wp_cache_init' ) ) {
                                 wp_using_ext_object_cache( true );
                         }
+
+                        // Re-initialize any hooks added manually by object-cache.php
+                        if ( $wp_filter ) {
+                                $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter );
+                        }
                 }
 
                 $first_init = true;