Originally Posted by HootanParsa
I'm still not sure I understood the problem, could you copy/move items with drag & drop correctly then?
I mean is it just a drawing problem?
It's a problem when you deselect an item.
If you select one item with long click, then deselect it with short click, then you can move around the  as if there were still a selected item. But of course nothing can happen when dragging above a folder, because there is nothing selected anymore.
It just doesn't realize there is nothing to move!
When you select two items and deselect one of it, it still shows a movable , but tries (correctly) to move only the selected one.
The numbers in the [ ] seem to be old values and are not updated when you deselect an item.