Closed grappler closed 2 years ago
The REST API Endpoint /wp/v2/widget-types/<widget>/render returns an iframe template which uses wp_head();
/wp/v2/widget-types/<widget>/render
wp_head();
https://github.com/WordPress/wordpress-develop/blob/6.0/src/wp-includes/rest-api/endpoints/class-wp-rest-widget-types-controller.php#L613-L655
As h2push hooks into wp_head, which causes the whole header to be added before the JSON output.
wp_head
The REST API Endpoint
/wp/v2/widget-types/<widget>/renderreturns an iframe template which useswp_head();https://github.com/WordPress/wordpress-develop/blob/6.0/src/wp-includes/rest-api/endpoints/class-wp-rest-widget-types-controller.php#L613-L655
As h2push hooks into
wp_head, which causes the whole header to be added before the JSON output.