[wp-trac] [WordPress Trac] #62450: TinyMCE editor doesn't load properly when initializing on Visual Tab (Firefox) [again]

[WordPress Trac]

#62450: TinyMCE editor doesn't load properly when initializing on Visual Tab
(Firefox) [again]
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 Reporter:  patkemper                   |      Owner:  (none)
     Type:  defect (bug)                |     Status:  new
 Priority:  normal                      |  Milestone:  Awaiting Review
Component:  Editor                      |    Version:  6.7
 Severity:  major                       |   Keywords:  needs-patch
  Focuses:  javascript, administration  |
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 This issue had been fixed a few years ago. Now with WP 6.7 the issue
 reappeared.

 I'll just copy-paste the original description (thanks to metalandcoffee):
 "TinyMCE editors within my custom metaboxes will sometimes fail to
 load/initialize when using the Firefox browser. This only happens when the
 editor is initializing on the Visual tab. If I switch to the Text tab and
 then reload the page, the editor initializing normally."

 Original ticket:
 https://core.trac.wordpress.org/ticket/52133

 Changeset that fixed the issue back in 2021:
 https://core.trac.wordpress.org/changeset/51082

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Ticket URL: <https://core.trac.wordpress.org/ticket/62450>
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