Is it me, or am I the only one who can't scroll (scroll circle) in Time Machine and are strictly designated to the arrows? That doesn't seem to futurey to me.
I can scroll perfectly by both two-finger scrolling, and scroll-wheel. Maybe your mouse's scroll ball is dirty ? P) If you're using one of them MightMouse(s) [or MightyMice ] it's a common issue. Does it scroll fine everywhere else ?