[wp-trac] [WordPress Trac] #39248: TinyMCE JavaScript editor is broken in 4.7

[WordPress Trac]

#39248: TinyMCE JavaScript editor is broken in 4.7
--------------------------------------------+-----------------------------
 Reporter:  argonius                        |      Owner:
     Type:  defect (bug)                    |     Status:  new
 Priority:  normal                          |  Milestone:  Awaiting Review
Component:  TinyMCE                         |    Version:  4.7
 Severity:  normal                          |   Keywords:
  Focuses:  ui, javascript, administration  |
--------------------------------------------+-----------------------------
 TinyMCE JavaScript editor API does not work as expected in 4.7. It works
 in 4.6.

 Steps to reproduce:

 1. Add following code to your admin panel:

 {{{
 function my_editor(){
         wp_editor( '', 'myeditor', array(
             'textarea_name' => 'mytextarea'
         ) );
 }
 add_action( 'admin_head', 'my_editor' );
 }}}

 2. Open browser's console and type in:

 {{{
 tinyMCE.activeEditor
 }}}

 '''Expected''': Returns JavaScript object (like in 4.6)
 '''Actual''': Returns null

 Note: You can also test with tinyMCE.editors, it's empty array in 4.7
 e.g. "[]", but it should contain 1 item.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39248>
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