Whenever you throw a grenade/smoke/chemlight trought a vehicle entrance/door it just bounce out like it hit aganist a wall.
I'm asking, if possible, that grenades would pass trought one entrace out of the other one.
Also, it's possible, throwing a chemlight, that it get stucked into heli glass, visible from inside and invisile from outside, like in the screenshot I provided.
I made those screenshot with the day light because it's easier to see the bug, I can do night screenshots if needed.
Thanks!