My idea is that:
before the jump player can select style to jump ex. classic, V style, H style(in mammout). Style select is done by pressing three key ex. 1-classic, 2-V, 3-H (before jump)
So if I jump of big gate and I have wind in the back then ski jumpers can't brake before ads baner and he is cras'h. This bug is in all jumps. I have replay and I can upload bug to Youtube.