My apologies, I misunderstood. If your player uses a Character Controller to move, which in the case of the included Emerald AI player it does, then the AI treats the player as a rigidbody movable object. One way around this is to put a Nav Mesh Obstacle on your player. This will allow your AI to avoid the player instead of pushing it away. However, using this method sometimes allows the player to push the AI, which doesn't happen often.