[wp-trac] [WordPress Trac] #53562: Widgets Editor in Customizer doesn't load with E2E tests + 0ms Animations

[WordPress Trac]

#53562: Widgets Editor in Customizer doesn't load with E2E tests + 0ms Animations
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 Reporter:  mikeschroder    |       Owner:  mikeschroder
     Type:  defect (bug)    |      Status:  reopened
 Priority:  normal          |   Milestone:  5.8.1
Component:  Editor          |     Version:  trunk
 Severity:  normal          |  Resolution:
 Keywords:  has-patch       |     Focuses:  javascript, css, administration
  fixed-major               |
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Comment (by kevin940726):

 I think this fix causes a regression that the focus is now lost when
 expanding/collapsing sections, while it should default to focusing on the
 back button (the first element). This is also the reason that e2e tests in
 gutenberg is now constantly failing.

 I'm not sure I understand the code either. `el` is just a dummy `<div>`
 created for obtaining the normalized transition name. I don't think this
 is the correct place to fix it?

 I mentioned in the gutenberg issue that I think the fix should fall along
 the lines here: https://github.com/WordPress/wordpress-
 develop/blob/bdf7dd6299e4453f9d7438de0a0e138d950ec0bf/src/js/_enqueues/wp/customize/controls.js#L1294-L1305.
 It should fire `completeCallback` regardless of if there's a
 `transitionend` event or not. Or, we could just go with #53542 and drop
 this :)

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Ticket URL: <https://core.trac.wordpress.org/ticket/53562#comment:9>
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