[wp-trac] [WordPress Trac] #31601: Images added to a gallery via the "Add to Gallery" flow are forgotten by the media modal

[WordPress Trac]

#31601: Images added to a gallery via the "Add to Gallery" flow are forgotten by
the media modal
--------------------------+-------------------
 Reporter:  ryan          |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  4.2
Component:  Media         |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Every image added after you click Add to Gallery is forgotten by the media
 modal once it is dismissed. The embed in the editor shows the gallery
 correctly, but when you edit the gallery the modal opens sans added
 images.

  In post-new.php, add a gallery to a post. Then,

 * Click the gallery
 * Click the pencil icon
 * Click Add to Gallery
 * Click to select an image
 * Click Add to Gallery
 * Note that the added image shows correctly in Edit Gallery
 * Click Update Gallery
 * Note that the added image shows correctly in the editor
 * Click the pencil icon
 * Note that the added image is not shown
 * Click Update gallery
 * Note that the image is now gone from the editor

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Ticket URL: <https://core.trac.wordpress.org/ticket/31601>
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