Antlion stands still while you kill it from a distance
### Summary
Everytime I shoot an Antlion from enough distance it simply won't aggro. It will just stand still and wait to be killed. It is the only mob that seems to behave this way.
### Steps to reproduce
Shoot an Antlion from enough distance. It won't aggro nor move. Everytime this happend to me, I was using a Bamboo Bow in the official server(server.veloren.net). Haven't tried under other circuntacies. It is really common.