[wp-trac] [WordPress Trac] #51443: Updating posts and tags not working well since 5.5.1

[WordPress Trac]

#51443: Updating posts and tags not working well since 5.5.1
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 Reporter:  Ziposs        |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.5.1
 Severity:  normal        |   Keywords:
  Focuses:                |
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 There is a bug in version 5.5.1 as updating posts give error
 The response is not a valid JSON response. Updating failed.

 and sometimes if add tags and update posts it show it is updated but tags
 are not shown when refresh Posts page.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51443>
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