[Bug 97196] In Feisty, Drag and Drop in Firefox Extension 'Zotero' is refused (works in Edgy)

[Vaibhav Vaidya]

Public bug reported:

The Zotero extension (www.zotero.org) has a sql based file organization capability. 
It allows classification (into tags) and organization (into hierarchy) of files (typically research articles).
The organization is done through drag and drop. This works perfectly in Edgy. 
Since I upgraded to Fiesty, when I try to drag a file into the intended location, the location doesnt get highlighted (if it's a tag), and even if it gets highlighted (in case of another file), the drop is refused... when I release the mouse button, it shows an animation of the file going back to it's original location.

While dragging it doesnt show a (circle with a line through it) icon to
show a drag to that location is not possible...

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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In Feisty, Drag and Drop in Firefox Extension 'Zotero' is refused (works in Edgy)
https://launchpad.net/bugs/97196