[wp-trac] [WordPress Trac] #54405: Disable Gutenberg 11.8.2 (and likely earlier) upon upgrade to WordPress 5.9

[WordPress Trac]

#54405: Disable Gutenberg 11.8.2 (and likely earlier) upon upgrade to WordPress 5.9
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 Reporter:  jorbin                   |       Owner:  hellofromTonya
     Type:  task (blessed)           |      Status:  reviewing
 Priority:  normal                   |   Milestone:  5.9
Component:  Upgrade/Install          |     Version:
 Severity:  blocker                  |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:
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Comment (by Clorith):

 I think that's fine, the new 590-function would deactivate the older
 version that the 580 one handled, so no need to keep both.

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Ticket URL: <https://core.trac.wordpress.org/ticket/54405#comment:15>
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