Add a slight delay during drag-and-drop (so that parent nodes don't expand instantly)
I think this will make it more easy to drag a child from one parent to another. It should behave like dragging files between folders in Mac OSX.
Chris W shared this idea
declined · AdminIgor Sereda (CEO / Founder, ALM Works) responded
no reasonable improvement so far
Chris, thanks for the idea. I understand that the problem is that issues immediately expand if you move dragged content onto a place under them (unintentionally). We'll think about how to deal with that.
(Simply adding a delay won't work with the kinetics of the current drag-and-drop. We'll figure out how to improve this.)