AIPerception is really janky in UE4. It’s best to create your own touch event using ’ generate hit something’ I can’t remember the name.
That way if the AI touches another pawn, then it reports back.
I agree with the comment above. Ai perception is absolute garbage in ue4, last time that i tried to use it i encountered so many glitches and missing features that i gave up on it and ended up using pawn sensing component.