[wp-trac] [WordPress Trac] #63589: Unable to live preview changes to Additional CSS in the Customizer when using a Block Theme

[WordPress Trac]

#63589: Unable to live preview changes to Additional CSS in the Customizer when
using a Block Theme
--------------------------+--------------------
 Reporter:  westonruter   |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  6.8.2
Component:  Customize     |    Version:  6.2
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+--------------------
 Adding the Additional CSS from the Customizer to the global styles makes
 sense, except not in the Customizer preview. This is because `wp-
 includes/js/customize-preview.js` is supposed to
 [https://github.com/WordPress/wordpress-
 develop/blob/d2613dae28655792b8a65f1fea86e238c243554a/src/js/_enqueues/wp/customize/preview.js#L635-L643
 dynamically update] the `STYLE#wp-custom-css` element with the new
 stylesheet whenever it changes. So this PR prevents putting the Additional
 CSS into the global styles when in the Customizer preview context.

 This issue was introduced in
 [https://github.com/WordPress/gutenberg/pull/58991 Gutenberg#58991] and
 core commits [55192] and [58703].

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/63589>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform