[wp-trac] [WordPress Trac] #29689: Drag-and-drop media upload fails if the Media Library has already been opened and closed manually

[WordPress Trac]

#29689: Drag-and-drop media upload fails if the Media Library has already been
opened and closed manually
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 Reporter:  cfinke        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Media         |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 '''What I Did'''

 1. Created a new post by visiting `wp-admin/post-new.php`
 2. Clicked the "Add Media" button.
 3. Closed the Media Library by clicking on the "X" in the top right
 corner.
 4. Dragged and dropped an image file from my desktop into the editor.

 '''What I Expected'''

 That the image file would upload and appear in the Media Library.

 '''What Happened'''

 The Media Library overlay opened, but no upload occurred.

 '''Notes'''

 This bug only affects the first attempt during any given pageload to
 upload via drag-and-drop into the editor after the Media Library has been
 opened. Subsequent drag-and-drop uploads completed without issue.

 Dragging and dropping into the Media Library is not affected, just into
 the editor.

 Browsers: Firefox 32 and 33 on Mac OS X 10.9.4

 Reproduced in WordPress 4.0 and today's nightly build with no plugins
 active.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29689>
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