[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]
-------------------------------------+-------------------------------------
 Reporter:  patkemper                |       Owner:  (none)
     Type:  defect (bug)             |      Status:  reopened
 Priority:  normal                   |   Milestone:  Awaiting Review
Component:  TinyMCE                  |     Version:  6.7
 Severity:  major                    |  Resolution:
 Keywords:  reporter-feedback        |     Focuses:  javascript,
  needs-test-info needs-screenshots  |  administration
-------------------------------------+-------------------------------------

Comment (by fischfood):

 Also confirming same behavior through TinyMCE within Advanced Custom
 Fields, as a WYSIWYG within a tab. Same console error, `Uncaught
 TypeError: Cannot read properties of null (reading 'setBaseAndExtent')`.

 It doesn't always happen, but does trigger more frequently after a cache
 clear.

 WordPress: 6.8.2
 ACF Pro 6.5.0.1

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Ticket URL: <https://core.trac.wordpress.org/ticket/62450#comment:14>
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