On my ubuntu laptop the slider bar screen is so tiny it is hurting my wrist to exactly position the mouse over the tiny tiny tiny tiny tiny orange narrow narrow bar on the right side of the screen. I would like it to at least be large enough to be VISIBLE like the size of a whole letter and not narrower than a dot of a ballpoint pen period cut in quarters. The orange fill in colour that shows where it is is so narrow it is almost invisible. About the size of the selection bar on this mozilla support page would be good. clicking the three lines and changing the display size does nothing for the incredibly narrow bar at the right for scrolling.