[wp-trac] [WordPress Trac] #51711: Many themes installed after a WordPress update

[WordPress Trac]

#51711: Many themes installed after a WordPress update
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 Reporter:  supportwi     |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 After updating to 5.5.2, WordPress installed the twentyten up to
 twentytwenty themes.

 What we're able to see in the logs:
 "POST /wp-admin/upgrade.php?step=upgrade_db HTTP/1.1" 200 27 "/wp-
 admin/upgrade.php?step=upgrade_db" "WordPress/5.5.2; https://example.com"

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Ticket URL: <https://core.trac.wordpress.org/ticket/51711>
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