In RCT2, you were able to build a track section that looked like this:
This piece could be constructed from a level, banked curve, or could also be constructed from a gentle slope down, with a tight curve.
In OpenRCT2, the first case works fine:
But the second case is not:
However, there is a workaround, which involves building in reverse. Not a huge issue, but somewhat annoying to do, nonetheless:
I'm hoping this could be fixed, as this element is quite useful for many different applications.