Thanks for the quick answer! Then this is nothing more to worry about - just remember to design tracks with this in mind. This destroys my new track as I have 2 long backwards-sections, but I better work around it by providing an alternative, but slower route around the second difficult obstacle in a row. It's already an "extreme", so I guess a little harder is not a big problem (except it's annoying with too long sections).

Is it any technical reason for this limitation, or just a bad design desition?
Is it possible to correct this behavior in the patch?