[wp-trac] [WordPress Trac] #55012: TinyMCE editor not rendering correctly in visual mode using wp_editor function in a meta box on a page with the Block editor enabled in WP 5.9

[WordPress Trac]

#55012: TinyMCE editor not rendering correctly in visual mode using wp_editor
function in a meta box on a page with the Block editor enabled in WP 5.9
--------------------------+------------------------------
 Reporter:  rickcurran    |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  TinyMCE       |     Version:  5.9
 Severity:  major         |  Resolution:
 Keywords:                |     Focuses:  ui, javascript
--------------------------+------------------------------

Comment (by rickcurran):

 Replying to [comment:1 burnside]:
 > I'm seeing a similar issue on my dev site. The following line of code
 will produce a **fatal error**:
 >
 >
 > {{{
 > $args = array(
 >   'tinymce' => array(
 >     'toolbar1' => 'bold,italic,bullist,link,unlink',
 >    )
 > );
 > wp_editor( $editor_content, $editor_id, $args );
 > }}}
 >
 > Error:
 >
 > PHP Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1
 ($callback) must be a valid callback, function "tinymce" not found or
 invalid function name in /nas/content/live/dev/wp-includes/class-wp-
 hook.php:307
 >
 > Stack trace:\n#0 /nas/content/live/dev/wp-includes/plugin.php(189):
 WP_Hook->apply_filters('html', Array)\n#1 /nas/content/live/dev/wp-
 includes/general-template.php(3519): apply_filters('wp_default_edit...',
 'html')\n#2 /nas/content/live/dev/wp-includes/class-wp-editor.php(183):
 wp_default_editor()\n#3 /nas/content/live/dev/wp-includes/general-
 template.php(3547): _WP_Editors::editor('Abstract and bi...', 'content',
 Array)\n#4 /nas/content/live/dev/wp-admin/edit-form-advanced.php(604):
 wp_editor('Abstract and bi...', 'content', Array)\n#5
 /nas/content/live/dev/wp-admin/post.php(206):
 require('/nas/content/li...')\n#6 {main}\n thrown in /nas/content/live/dev
 /wp-includes/class-wp-hook.php on line 307

 I don't think this is the same as the error I have filed this ticket for,
 this sounds like you are seeing some kind of fatal PHP error where
 presumably the page isn't loading at all? That's not the error that this
 ticket is related to if so, I think you may have some other issue
 happening with your use of wp_editor.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55012#comment:2>
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