One thing I enjoy is building hopping in Tokyo using the wonderful Cowinsim MD500E. However, I’ve noticed that just as I reach the edge of the building on a nice approach, it’s as though I hit some invisible barrier that knocks me up and away. I can land if I hover directly over the helipad and elevator down.
This doesn’t happen in 2020. It’s as though the collision zone extends a few floors higher than the building.
Known issue: