[wp-trac] [WordPress Trac] #59308: Attachment custom fields not rendered in some cases

[WordPress Trac]

#59308: Attachment custom fields not rendered in some cases
--------------------------+------------------------------
 Reporter:  SeBsZ         |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Media         |     Version:  6.3.1
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  javascript
--------------------------+------------------------------

Comment (by SeBsZ):

 @antpb I managed to make a video for you which you requested. I'm running
 the latest nightly version of WordPress, which you can see in the video.
 It's a clean install. I activated the Twenty Twenty-Two theme and uploaded
 about 150 stock images to the media library. I then set one of the images
 to be the featured image for the default Hello World post. I picked the
 last image in the media library (not on the first page).

 I added very little custom code to the theme's function.php, which I
 pasted below. Notably I had to disable the block editor since we don't use
 it. Interestingly, with the block editor enabled the bug does NOT occur!

 {{{#!php
 add_filter('use_block_editor_for_post', '__return_false');

 /**
  * Add some custom fields to attachment edit page.
  */
 \add_filter(
     'attachment_fields_to_edit',

     function ($form_fields, $post) {
         $form_fields['extra_field'] = array(
             'label' => 'Extra field',
             'input' => 'html',
             'html'  => '<input type="text" class="text"
 readonly="readonly" value="' . \esc_attr(\get_the_title($post->ID)) . '"
 />',
         );

         return $form_fields;
     },
     10,
     2
 );
 }}}

 Video showing bug without block editor: https://1drv.ms/v/s!AtabcxrS-
 Zu3l64cKFmTKdp5ikwqqg?e=r8xK6u
 Video showing no bug with block editor: https://1drv.ms/v/s!AtabcxrS-
 Zu3l64j3UQFux6yceADfQ?e=REOcnC

 Please let me know if more information is needed!

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Ticket URL: <https://core.trac.wordpress.org/ticket/59308#comment:3>
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