Dragging newly created favorite into a favorite group creates visual artefact until the apply button is pressed

What steps will reproduce the problem?
1. Open reference manager
2. Find a reference, right click and add to favorites (User specific)
3. Go to favorites, and drag the new favorite to a favorite folder

What is the expected output? What do you see instead?
New favorite icon should now exist (only) under the group folder. What actually 
happens is the new favorite exist under both the new folder, and where it 
previously existed

Please use labels and text to provide additional information.

Original issue reported on code.google.com by david.ba...@gmail.com on 22 Aug 2012 at 7:17

mbohun / biolink

Dragging newly created favorite into a favorite group creates visual artefact until the apply button is pressed #179