Ticket #38899: 38899.0.diff

src/wp-includes/class-wp-customize-manager.php

@@ -2274 +2274 @@
                         return new WP_Error( 'changeset_post_save_failure', '', $response );
                 }
 
+                // Ensure that auto-draft posts will get garbage-collected.
+                if ( ! wp_next_scheduled( 'wp_scheduled_auto_draft_delete' ) ) {
+                        wp_schedule_event( time(), 'daily', 'wp_scheduled_auto_draft_delete' );
+                }
+
                 return $response;
         }