[wp-trac] [WordPress Trac] #28898: Theme preview toolbars don't consistently load

[WordPress Trac]

#28898: Theme preview toolbars don't consistently load
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 Reporter:  melchoyce       |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Themes          |    Version:  trunk
 Severity:  normal          |   Keywords:
  Focuses:  administration  |
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 The "add theme" preview toolbar doesn't consistently load for me. See it
 in action: https://cloudup.com/cHSv7TS9dPz

 Not seeing anything in the console.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28898>
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