id summary reporter owner description type status priority milestone component version severity resolution keywords cc focuses 48283 Cron: 'Headers already sent' warning with `ALTERNATE_WP_CRON` dlh jorbin "After [45560], a ""Headers already sent"" warning is generated when `ALTERNATE_WP_CRON` is enabled. The cause seems to be that `spawn_cron()` adds headers via `wp_redirect()` and then sends headers before loading `wp-cron.php`. The attached patch would add a `headers_sent()` check before the two caching headers." defect (bug) closed normal 5.3 Cron API 5.3 normal fixed has-patch