Good Day @Bis!
Maybe after 10 years to solve this problem?
Almost in many buildings of main Arma3 maps, AI will fall under the floor of the first floor.
Very often AI lays down and then it is not visible at all!
If a player enters such a building, then he can be shot by such a unit right from under the floor! Looks super stupid.
Please show at least some interest in such a problem, at least 10 years later!