[wp-trac] [WordPress Trac] #35947: Customizer panel fails to fully expand leaving extra margin

[WordPress Trac]

#35947: Customizer panel fails to fully expand leaving extra margin
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 Reporter:  tronoxas                     |       Owner:  ryankienstra
     Type:  defect (bug)                 |      Status:  assigned
 Priority:  normal                       |   Milestone:  4.5
Component:  Customize                    |     Version:  4.4.2
 Severity:  normal                       |  Resolution:
 Keywords:  has-patch reporter-feedback  |     Focuses:
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Comment (by delawski):

 @westonruter - I have investigated an issues with wrong element being
 focused inside widget controls after shift-click. I've noticed that the
 problem was present there earlier and is not related to this ticket (you
 could checkout master branch and see the same issue).

 I have, however, found out that [https://github.com/xwp/wordpress-
 develop/commit/81b7b76a7c0b6d9bf4e5ee7482efa66cd6cca554 the order of
 focusable elements is wrong]. For some reason anchor tag was picked as the
 first element to focus on.

 So what I did is split the procedure for finding focusable elements into
 two stages:
 1. Find first visible input, textarea, button or select.
 2. If no such form element is found, search for any anchor, object or
 other element having tabindex property.

 [https://github.com/xwp/wordpress-develop/pull/145 You can see the changes
 in the same PR, the latest commit.]

 I couldn't find any better, more elegant solution. I'm open to other
 ideas.

 [https://core.trac.wordpress.org/attachment/ticket/35947/35947.5.patch
 I've attached a patch file with the latest update.]

 @ryankienstra - Could you, please, take a look at the solution and confirm
 it's working for you?

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Ticket URL: <https://core.trac.wordpress.org/ticket/35947#comment:18>
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