Confirmed. I placed mouse over a lower track and zoom so top track goes above arrange view, then do a horizontal zoom, now move mouse over TCP and it draws panel controls on the screen.
Win10 x64
EDIT
Another thing, when I go to do the horizontal zoom in arrangeview, notice the item from track one comes into view, ya the arrange view is scrolling up on the very first mouse rotation, but that happens in the release version too, its sort of corner case shit so what ever.