It seems 8637 has introduced a very annoying bug in the project view.
Our project is large enough to fill more than a couple of screen-fulls in the project view. When I have made a selection in the project view and scroll to another section and try to expand a collapsed branch of the tree, idea refocuses on my selection. Meaning I have to scroll all the way back to where I clicked and continue my navigation.
This only happens on expansion of nodes, not collapse.