[wp-trac] [WordPress Trac] #50905: Bug of both classic editor plugin and Featured image after update to 5.5

[WordPress Trac]

#50905: Bug of both classic editor plugin and Featured image after update to 5.5
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 Reporter:  christelleneant  |      Owner:  (none)
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Editor           |    Version:  5.5
 Severity:  critical         |   Keywords:
  Focuses:                   |
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 Good evening,
 Your last update is a pure disaster. I used the classic editor plugin
 because your block editor is a full mess, and now it does not work anymore
 since your update. I can only edit in HTML mode and not in visual !
 So I tried to publish my last article in your block editor, but impossible
 to add a featured image, I have a white page with "Featured image" title
 showing on the top and that is all.

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Ticket URL: <https://core.trac.wordpress.org/ticket/50905>
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