Comment # 1 on bug 1023667 from Ulrich Derenthal

I just noticed another change in the behavior of Firefox (most likely also
since the last update):

When I left-click somewhere on the scrollbar outside the slider, Firefox was
previous scrolling one "page" (as if I had pressed the page-up and page-down
key) in this direction.

Now it jumps directly to the corresponding position of the webpage (bottom of
the webpage if I click close to the lower end of the scrollbar; middle of the
page if I click on the middle of the scrollbar, and so on).