It works just like the one in SublimeText 3 with
one difference.
In SublimeText, when I click anywhere in the rectangle in below screenshot, which represents the area of the file shown in the editor, scrolling does not occur until I actually begin to drag that section with my mouse.
In IntelliJ, wherever my mouse clicks on the right sidebar, even if within that red rectangle area, the editor makes immediate scroll adjustment to that precise location.
That subtle instant scroll by IntelliJ is something I'm learning to adjust to, quite jarring to be honest, but I like having that very wide scroll-bar thingy... so... guess I'll learn to love it =)
