[wp-trac] [WordPress Trac] #51484: A side meta box can be prevented from being returned to the side

[WordPress Trac]

#51484: A side meta box can be prevented from being returned to the side
----------------------------------------+-----------------------------
 Reporter:  johnbillion                 |      Owner:  (none)
     Type:  defect (bug)                |     Status:  new
 Priority:  normal                      |  Milestone:  Awaiting Review
Component:  Editor                      |    Version:
 Severity:  normal                      |   Keywords:  needs-patch
  Focuses:  javascript, administration  |
----------------------------------------+-----------------------------
 Given a site with an `advanced` meta box and a `side` meta box on the post
 editing screen, if the side meta box is moved into the advanced position
 it's not possible to move it back to the side. Tested both with drag and
 drop and by clicking the up/down position arrows introduced in 5.5.

 Steps to reproduce:

 1. Add the following to a plugin:


 {{{
 add_action( 'add_meta_boxes', function() : void {
         \add_meta_box(
                 'test-advanced',
                 'Advanced',
                 function() {
                         echo 'Advanced';
                 },
                 'post',
                 'advanced'
         );
         \add_meta_box(
                 'test-side',
                 'Side',
                 function() {
                         echo 'Side';
                 },
                 'post',
                 'side'
         );
 } );
 }}}

 2. Load the post editing screen and confirm one advanced and one side meta
 box are present.
 3. Move the side meta box into the advanced section, either by clicking
 its "up" arrow or by dragging and dropping it.
 4. Reload the post editing screen (required step).
 5. Observe that it's not possible to move the side meta box back to the
 sidebar. It can't be dragged into the sidebar, and its down button is
 disabled.

 This does not affect the classic editor, even if you're silly enough to
 move all the side meta boxes over into the advanced section.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/51484>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform