[wp-trac] [WordPress Trac] #52440: "Leave site? Changes you made may not be saved" on custom taxonomy pages after WP 5.6.1 update

[WordPress Trac]

#52440: "Leave site? Changes you made may not be saved" on custom taxonomy pages
after WP 5.6.1 update
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 Reporter:  archon810                            |       Owner:
                                                 |  SergeyBiryukov
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  high                                 |   Milestone:  5.6.2
Component:  Editor                               |     Version:  5.6.1
 Severity:  normal                               |  Resolution:
 Keywords:  has-screenshots has-patch commit     |     Focuses:
  fixed-major                                    |
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Comment (by gwmbox):

 Tested on several sites using the functions.php fix, but it does not work
 (for me).

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Ticket URL: <https://core.trac.wordpress.org/ticket/52440#comment:47>
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