mine does no damage because it gets stuck behind objects and people take advantage of this but I cannot dodge any ranged attacks as good as they can dodge chiron. I also have noticed chiron doesn't do anything sometimes when in pvp not sure if it's a hacker add on or what.
That is a "fix" of putting a sort of los check on the chiron to prevent players from destroying stuff inside the walls in siege. I can tell you that it did not stop the chiron from attacking stuff through the walls, but it did cause the issue you are encoutering. And that issue does (greatly) affect pve when the chiron is behind the wall/door/barrier in instances=no damage.
Yay!