Bottom scrollbar is nearly impossible to activate and disappears; basically useless.

I've checked around and it said this was fixed, but it either isn't, or there is still a significant usability problem. 

See: https://youtrack.jetbrains.com/issue/IDEA-151247

The right (vertical) scrollbar shows whenever there is content longer than the viewport. It doesn't interfere with my work and is always there when I need it. 

The bottom (horizontal) scrollbar disappears and can only be activated (sometimes) by clicking on a line longer then the viewport's width, then quickly mousing to the bottom to grab the scrollbar before it disappears, which I can only do half the time because it hides almost instantly. 

I have read that using the right arrow will make it visible; that worked exactly once, now I don't see any horizontal scrollbar at all, no matter what I do. 

This is very frustrating for a number of users since at least 2011 (6 years).

Can you please either tell me the secret to getting it to display in the same way the vertical scrollbar does (anytime there is code longer than the viewport), or turn on all the time, or on hover. As above, the vertical scrollbar is there always, at partial opacity; and doesn't interfere. The horizontal scrollbar should be the same!

The IDE is supposed to make my work easier; having to find workarounds to make a scrollbar work is the opposite of that. What's so difficult about giving users the ability to set preferences for this???!!

Thanks