If one has several pages of data or spaces, lets say 9, and then enters into a chosen space, or does any action on a document on that 9th page, there is no way to go one step back. For example, editing properties on a document in a 9th page, after you finish, drops you back to the first page. Also, entering a space on a 9th page of spaces (and not finding what you've searched for), there's no way to go back to 9th page, you can just go one level up in spaces list menu on top of page, which brings you, well, onto a 1st page of browsed spaces. Or you can do what users find the most intuitive: push a back browser button. Which you still haven't fixed yet, and leads to one click "swallowed", and weird thing to happen.
All of this is kind of clunky. Navigator helps a bit, but it is not to intuitive.