Hi Alex,
Good to be bashing this stuff out again…
it is definitely the workspace, I think mainly because the bar needs to hit another screen edge before it moves from its location, while the workspace can also float. personally, I don’t like the float option for the workspace. I don’t like it for desktop programs like Photoshop, and I think it makes for a messy experience in Pro.
I personally, prefer the option to tag the workspace to a screen edge
I also like the idea of locking the positions in the preferences, especially important when it comes to client use (try explaining to a client on the phone that the button they want is in the top left of the screen, only they have moved it by accident… it has the potential to be worse than parental IT support!)
Maybe a little of both… a lock in preferences, and a slower pick up for moving the workspace?