single ai dont react to gunfire when inside 4 walls like a bae

Only noticed this is my mission im making: I have ai placed around a base, and they all have waypoint i set for a patrol around the parimeter, then i have 3 ai who patrol the inside of the base. but once gunfire goes off, the patrols outside the base, they notice it and start to firing back at me and my position, even the ones on the lighthouse got into the action.

but the patrol inside the base, just continue like no one was shooting, and i wasnt there. they didnt take up cover, or react to any of the gunfire, even if i shot some ai in the base, nothing just continues patroling, until i actually shot him he does something. (die)

I only notice this when ai are patroling the inside of the base and , and are not grouped, the ai outside react to the gunfire