There were a few occasions where I tried to hit a vehicle with a rocket, and right when it was about to hit it, it suddenly goes up and misses. Why does it happen?
Foliage in Bad Company 2 adversely affects the rockets trajectory. If you want to experiment with this fire a rocket at a trees leaves. It both speeds up and goes of in a different direction. I assume this is a physics glitch of some kind. It happens when you would least expect it and sometimes there could only be a small obstruction that it hits, almost not visible, and fly's off in the wrong direction.