[wp-trac] [WordPress Trac] #51442: Cannot add youtube links since Gutenberg update to 9.1.0

[WordPress Trac]

#51442: Cannot add youtube links since Gutenberg update to 9.1.0
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 Reporter:  yeoric        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  5.5.1
 Severity:  major         |  Resolution:
 Keywords:                |     Focuses:
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Comment (by yeoric):

 But then it happened again. I worked on a page for a while, all was well,
 and then added a new embed block on the page - wham. Same as before:
 "Could not embed", JSON error etc. , and it was not Youtube's fault - I
 had the same block on the same page before, removed it and then decided
 I'd add it again in a different place on the page. Switched to Classic
 editor, no problem editing + saving the page there. Back to Gutenberg -
 same error.
 Something is definitely wrong here.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51442#comment:2>
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