[wp-trac] [WordPress Trac] #49304: No changes saved after editing post in "Edit as HTML" mode

[WordPress Trac]

#49304: No changes saved after editing post in "Edit as HTML" mode
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 Reporter:  anyclip       |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 When I edit HTML code in my custom block nothing changes. It works fine
 with WordPress ver. 5.2, but doesn't with ver. 5.3

 Code: [https://pastebin.com/RqQP0LCM]

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Ticket URL: <https://core.trac.wordpress.org/ticket/49304>
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