I'm running Ubuntu 12.04. The overlay scrollbar doesn't appear in the dash when i hover over the scrollbar. It appears in other places.
It's a known bug/"feature" in Nux
I believe this is what you mean (see circled cursor):
This is a known bug/feature, with no estimated fix date (it's in the backlog).
Okay! i found a satisfactory work around to the question I posted.Here is the answer.Maximize the dash window and use the mouse on the scroll bar then its hard to miss the target.