"hidden_meta_boxes" Filter Does Not Work When Gutenberg and Classic Editors are Active

[arkytn]

Describe the bug
When the Gutenberg and Classic editor plugins are active, the "hidden_meta_boxes" filter does not hide any meta boxes.

To Reproduce
Steps to reproduce the behavior:

1. add_filter('hidden_meta_boxes', 'on_hidden_meta_boxes', 10, 3 );
   

function on_hidden_meta_boxes($hidden, $screen, $use_defaults){
if($screen->id == 'asset'){
$hidden[] = 'commentstatusdiv';
$hidden[] = 'commentsdiv';
$hidden[] = 'page-links-to';
$hidden[] = 'pageparentdiv';
}

return $hidden;  

}

3. Meta boxes will not be hidden .

Expected behavior
Should hide the hidden set of metaboxes and un-check the Screen Options for those boxes.

Desktop (please complete the following information):

• OS: [e.g. Win10, Linux]
• Browser [e.g. All]
• Version [e.g. WP 4.9.8]

Additional context
Gutenberg Version 3.7.0
Classic Editor Version 0.4

[danielbachhuber]

Thanks for the report, @arkytn.

Can you try changing your hook priority to 11?

add_filter('hidden_meta_boxes', 'on_hidden_meta_boxes', 11, 3 );

Gutenberg has some code to disable hidden metaboxes, because there isn't corresponding Screen Options UI for managing them. It may be that we need to apply the Gutenberg code on an earlier priority. Previously #7570 #9232

[arkytn]

Very good. The higher priority did indeed solve the problem. Thank you