[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 About2press):

 I have got the same console error in Modern Events Calendar which also
 uses TinyMCE in its text fields:


 {{{
 Uncaught TypeError: can't access property "setBaseAndExtent", n is null
     i /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:3
     each /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:3
     select /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:3
     _ /wp-admin/js/editor.min.js?ver=6.7.2:2
     switchEditors /wp-admin/js/editor.min.js?ver=6.7.2:2
     jQuery 4
     <anonymous> /wp-includes/js/tinymce/wp-
 tinymce.js?ver=49110-20201110:33
     jQuery 2
 4 wp-tinymce.js:3:291933
     i /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:3
     each /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:3
     select /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:3
     _ /wp-admin/js/editor.min.js?ver=6.7.2:2
     switchEditors /wp-admin/js/editor.min.js?ver=6.7.2:2
     jQuery 4
     <anonym> /wp-includes/js/tinymce/wp-tinymce.js?ver=49110-20201110:33
     jQuery 2
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/62450#comment:10>
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