It would be sure be great if the behavior after dragging an element to a new location in app structure was such that it would not collapse the structure.
When dragging elements around, it is important to keep the structure static rather than refreshing to something new.
We have done a lot of improvements in this area. Are you sure the problem is still the same? Maybe post more details about the items you are dragging and dropping
And while talking, the same for the Events! Scrolling down, adding a event and then again scrolling down to edit the Event action is annoying. Just keep me there, right where I have added the event.