[wp-trac] [WordPress Trac] #27291: Widget Customizer is incompatible with Twenty Fourteen Ephemera Widget

[WordPress Trac]

#27291: Widget Customizer is incompatible with Twenty Fourteen Ephemera Widget
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 Reporter:  celloexpressions  |      Owner:
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Widgets           |    Version:  trunk
 Severity:  normal            |   Keywords:
  Focuses:                    |
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 ''Filing this as a widget customizer issue, since it should work with all
 existing widgets in theory. We could also fix this from the theme's side,
 though.
 ''

 A few issues here. I'm guessing some might be known:
 - Adding a Twenty Fourteen Ephemera widget through the widget customizer
 results in an error in the preview: `Undefined index: format in wp-
 content\themes\twentyfourteen\inc\widgets.php on line 74`
 - Changing the format fixes the preview, but causes the widget controls to
 be replaced with: `Notice: Undefined index:
 widget_twentyfourteen_ephemera-13 in wp-includes\class-wp-customize-
 widgets.php on line 1045`
 - I saw issues with MediaElement.js not being loaded when adding one with
 the post format set to audio or video at one point, although it doesn't
 appear to still be an issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/27291>
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