[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:  (none)
     Type:  defect (bug)               |      Status:  new
 Priority:  high                       |   Milestone:  5.6.2
Component:  Editor                     |     Version:  5.6.1
 Severity:  normal                     |  Resolution:
 Keywords:  has-screenshots has-patch  |     Focuses:
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Comment (by archon810):

 @hwk-fr I'm not clear if just the wp-includes/js/autosave.js fix is
 supposed to work by itself, because it didn't for me. However, after I
 added the functions.php part, then it stopped prompting. Is that expected?

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Ticket URL: <https://core.trac.wordpress.org/ticket/52440#comment:32>
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