The state of the foldout toolbar, should be rembembered by the system, for the contenttype you are editing, and based on the specific user..
So that editors - in a simple way can influence the interface in a way that they find most userfriendly
As it is now, it doesn´t remember any state, and if i switch between folders - the toolbar that i just collapsed, is open again
see video for explanation
http://screencast.com/t/Xb6VlpgyUzX