[wp-trac] [WordPress Trac] #27897: Theme preview empties sidebar on active theme

[WordPress Trac]

#27897: Theme preview empties sidebar on active theme
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 Reporter:  La Geek       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Themes        |    Version:  3.9
 Severity:  normal        |   Keywords:
  Focuses:                |
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 How to reproduce:

 1.) Insert at least one widget into a sidebar. You can insert one with
 Appearance -> Widgets or Appearance -> Customize -> Widgets. This makes no
 difference in its (bug) result.

 2.) Go to Appearance -> Themes. Click "Live Preview" on an inactive theme.
 Wait until you see the Live Preview. Now click on left top the button
 Cancel.

 3.) Go to frontend and check, if the widget is still there. It is not. The
 sidebar is empty. In my test this concerns also older widgets, imo, it
 concerns all widgets.

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Ticket URL: <https://core.trac.wordpress.org/ticket/27897>
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