[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 hwk-fr):

 @viablethought I also get this, the prompt doesn't appear if I edit a the
 content and leave the page quickly.

 But it's inconsistent. It looks like the whole `autosave.js` script has
 some issues to retrieve and compare the value in the `edit.isHidden()` and
 `editor is.Dirty()` part. It looks like it needs some times to correctly
 initialize. If the user change the content too quickly, the script doesn't
 take it in account.

 It only happens when editing only the content. When changing title or
 excerpt it always work.

 Here is a video showing this behavior:
 [https://core.trac.wordpress.org/attachment/ticket/52440/2021-02-05_17h20_03.mp4]

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Ticket URL: <https://core.trac.wordpress.org/ticket/52440#comment:27>
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