[wp-trac] [WordPress Trac] #29958: collapse menu keyboard accessibility

[WordPress Trac]

#29958: collapse menu keyboard accessibility
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 Reporter:  afercia                  |       Owner:
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  Awaiting Review
Component:  Administration           |     Version:  4.0
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:  ui, accessibility
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Comment (by afercia):

 Replying to [comment:10 SergeyBiryukov]:
 > Is there a reason to change `180deg` to `180.001deg`?
 Trying to fix lack of antialiasing for transformed layers in Firefox
 during CSS transitions.

 The rotate animation is a bit weird, at least on Windows. You can easily
 notice this in the credits page where the menu items don't show sub items.
 With Firefox, when you collapse/expand the menu: the icon should be at the
 same vertical position but it moves 1 pixel up and down instead.
 Maybe @michaelarestad could help here, noticed he knows a lot about this
 issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29958#comment:12>
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