The AH-64 Apache has a bug where firing an AGM-114 Hellfire causes the whole main rotor to snap off.

There's also two more bugs. Like not being able to switch between bodygroups to get the armament that you want, and firing the rocket pods on the Mi-24A Hind-A causing one of the rockets to explode inside the chopper and kill you.

To clear up more on the bodygroup bug. For example, the Mi-17 fails to spawn with all 3 rocket pods, and whenever i try to check or uncheck the bodygroups to add the rocket pods, it doesn't work.