It would be great if you could drag tasks to collapsed Statuses.
See my little video:)
Currently, I think you have to toggle it open to drag something into it. It would be nice if you could drag a task into a collapsed status, and un-collapse it when you do.
Seems like the toggle only works the one time you click it, not if moving tasks in or out makes it empty or no longer empty!
I see that "drag to collapsed status now is working. Is this still in progress? As another user mentioned it would be nice if the "collapse status" toggle was actually a toggle and not a button (it works like a button). If on, it should check whether you are emptying a status, and if true collapse after move. Also maybe vise versa (expand empty collapsed column when you drop - but I could see this bugging some users). Then it could work as a proper toggle.