[wp-trac] [WordPress Trac] #59718: Short-term (WP 6.4) hotfix to prevent fatal error in standalone Gutenberg (<16.5)

[WordPress Trac]

#59718: Short-term (WP 6.4) hotfix to prevent fatal error in standalone Gutenberg
(<16.5)
-----------------------------------------------+---------------------
 Reporter:  rebasaurus                         |       Owner:  (none)
     Type:  defect (bug)                       |      Status:  new
 Priority:  normal                             |   Milestone:  6.4
Component:  Upgrade/Install                    |     Version:
 Severity:  critical                           |  Resolution:
 Keywords:  reporter-feedback close has-patch  |     Focuses:
-----------------------------------------------+---------------------

Comment (by hellofromTonya):

 Heads up:
 The class `WP_REST_Global_Styles_Controller_Gutenberg` (in `lib/class-wp-
 rest-global-styles-controller-gutenberg.php`) is overloading and invoking
 the `validate_custom_css()` method

 * Gutenberg 16.5.0:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.5.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L732 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.5.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L329 invoking]
 * Gutenberg 16.5.1:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.5.1/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L732 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.5.1/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L329 invoking]
 * Gutenberg 16.6.0:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.6.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L732 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.6.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L329 invoking]
 * Gutenberg 16.7.0:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.7.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L709 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.7.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L328 invoking]
 * Gutenberg 16.7.1:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.7.1/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L709 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.7.1/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L328 invoking]
 * Gutenberg 16.8.0:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.8.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L709 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.8.0/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L328 invoking]
 * Gutenberg 16.8.1:
 [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.8.1/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L709 overloading]
 and [https://plugins.trac.wordpress.org/browser/gutenberg/tags/16.8.1/lib
 /class-wp-rest-global-styles-controller-gutenberg.php#L328 invoking]
 * Gutenberg `trunk`:
 [https://github.com/WordPress/gutenberg/blob/trunk/lib/class-wp-rest-
 global-styles-controller-gutenberg.php#L709 overloading] and
 [https://github.com/WordPress/gutenberg/blob/trunk/lib/class-wp-rest-
 global-styles-controller-gutenberg.php#L328 invoking]

 Reverting [56575] will impact not only those past releases, but also
 current and future development. Why? Reverting the method back to
 `private` means the method cannot be overloaded or invoked within
 Gutenberg.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/59718#comment:16>
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