[wp-trac] [WordPress Trac] #62680: YouTube embed doesn't let me add a caption

[WordPress Trac]

#62680: YouTube embed doesn't let me add a caption
--------------------------+---------------------
 Reporter:  bikegremlin   |       Owner:  (none)
     Type:  defect (bug)  |      Status:  closed
 Priority:  normal        |   Milestone:
Component:  General       |     Version:  6.7.1
 Severity:  normal        |  Resolution:
 Keywords:  close         |     Focuses:
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Comment (by ddos37):

 Only default themes and plugins are activated.


 {{{
 Uncaught TypeError: Cannot read property '0' of undefined
     at Object.c [as addAfter] (load-scripts.php:115)
     at Object.j.is.d.element.wpAjax.validateForm.d.data.match.d.complete
 (load-scripts.php:10)
     at i (load-scripts.php:2)
     at Object.fireWith (load-scripts.php:2)
     at y (load-scripts.php:4)
     at XMLHttpRequest.c (load-scripts.php:4)
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/62680#comment:18>
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