Don't know why you're getting down voted, seems to me this is the obvious reason (if not 10.7.1 then 10.7.x). These are clearly bugs, and I agree, they make these features kind of useless for me on my main setup. Prior to Lion I already used a "poor man's fullscreen" by manually making the windows these sizes on each screen. Was hoping this would make things better but instead made it infinitely worse.