[wp-trac] [WordPress Trac] #38532: Customizer: Edit shortcuts buttons: clicking does not work in Firefox

[WordPress Trac]

#38532: Customizer: Edit shortcuts buttons: clicking does not work in Firefox
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 Reporter:  sirbrillig    |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Customize     |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Steps to reproduce:

 1. Open the customizer in Firefox previewing Twentyfifteen
 2. Click anywhere to cause the edit shortcut icon buttons to appear
 3. Click an edit shortcut icon

 Expected: the sidebar would switch to the control for that element.
 Actual: nothing happens.

 The cause appears to be that `button` elements cannot have descendant
 click targets in Firefox.

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Ticket URL: <https://core.trac.wordpress.org/ticket/38532>
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