[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 needs-testing  |     Focuses:
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Changes (by audrasjb):

 * keywords:  needs-patch has-screenshots => has-screenshots has-patch
     needs-testing


Comment:

 `52440.diff` fixes the issue on my side.
 This first patch is based on the exploration made by @dbtedg in #52450.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52440#comment:10>
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