Scroll Bar Shrinks at Ends

[Crisfole]

When using the scroll bar to slide left and right, at the ends it shrinks the viewport, when most of the time I'd just like it to stop. Perhaps stopping and re-dragging could shrink it, but as it is now, it's a bummer to have to use the scroll-wheel to zoom back out.

Perhaps adding drag handles on the scroll wheel to change the viewport? Then you could disable the shrink when you get near the ends functionality entirely.