[wp-trac] [WordPress Trac] #55474: Backport bugfixes from Gutenberg into Core for WP 5.9.3

[WordPress Trac]

#55474: Backport bugfixes from Gutenberg into Core for WP 5.9.3
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 Reporter:  audrasjb                  |       Owner:  mamaduka
     Type:  task (blessed)            |      Status:  assigned
 Priority:  normal                    |   Milestone:  5.9.3
Component:  Editor                    |     Version:
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Comment (by audrasjb):

 In [changeset:"53012" 53012]:
 {{{
 #!CommitTicketReference repository="" revision="53012"
 Editor: Use `wp_unique_id()` instead of `uniqid()` to generate CSS class
 names.

 Backports changes from https://github.com/WordPress/gutenberg/pull/38891.
 See https://github.com/WordPress/gutenberg/issues/38889.

 Props westonruter, mamaduka.
 See #55474.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/55474#comment:9>
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