remove the metabox for CPT does not work

Also from uknown reason metabox of the taxonomy is not in metabox array so I do not know how to delete id via action

add_action( ‘add_meta_boxes’, function() {

global $wp_meta_boxes;
var_dump($wp_meta_boxes);

}, 999);

I would check with https://www.ads-software.com/support/topic/changing-taxonomy-metabox/ regarding the metabox, specifically this reply: https://www.ads-software.com/support/topic/changing-taxonomy-metabox/#post-11857389

If you’re using Gutenberg at all for this post type, then you’re going to have some issues with regards to the meta_box_cb setting and disabling.

If you’re using classic editor for this case, then that’s an issue that I don’t presently have an answer for and would need to dig into.

you are right Michael – the problem is in the gutenberg. I can turn it off for this CPT so problem solved for me now ??

Thank you

Welcome.