[wp-trac] [WordPress Trac] #36521: Setting media control value through JavaScript API does not update control template

[WordPress Trac]

#36521: Setting media control value through JavaScript API does not update control
template
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 Reporter:  TimothyBlynJacobs  |      Owner:
     Type:  defect (bug)       |     Status:  new
 Priority:  normal             |  Milestone:  Awaiting Review
Component:  Customize          |    Version:  4.2
 Severity:  normal             |   Keywords:
  Focuses:  javascript         |
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 When setting the value of a MediaControl through the JS API, the control
 in the customizer still displays the old image previews. This is because
 the internal `params.attachment` data is not set to the new value.

 Attached is a patch that will update the internal `params.attachment` data
 if necessary. This could be worked around in the client code, but it is
 certainly unexpected behavior, and since there is already a call to
 `wp.media.attachment( value ).fetch()` it seems like this should belong in
 the control itself.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36521>
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