this is a brief description of my problem and how to duplicate it
1. open nautilus and maximize the window. close nautilus.
2. now open nautilus and unmaximize it. the window did unmaximize only that it still fills the whole desktop. but if you do it the other way around like so:
3. resize the 'current' unmaximized nautilus and close it, open it up and it retains its size.