The Taxonomy views have been enhanced for a more consistent administration experience, using CSS/JS only. Taxonomies now look & feel like post types.
The User profile and related views have been reworked and are now displayed like a post with ACF Field Groups for a consistent administration experience.
WordPress settings views (general, writing, reading, discussion, media & permalinks) have been reworked and are now displayed like a post with ACF Field Groups for a consistent administration experience.
This module is enabled by default. To disable it, you can use the following code:
add_action('acf/init', 'my_acfe_modules');
function my_acfe_modules(){
// Disable Enhanced UI
acfe_update_setting('modules/ui', false);
// Or:
acf_update_setting('acfe/modules/ui', false);
}