hi
@KanklesTv - thanks for reporting what you found.
1) all the enZombies and any zombies from my supported add-ons should always take damage. if they do not, then that will need to be investigated. can you let me know what all mods you have loaded in your Mods folder? also, did you or your players notice any errors pop up on the console while playing?
2) the invisible pimp-slapping zombie is something that has been experienced by several players so far, so you are not the first, and i'm still watching out for it. can you tell me several things: did the invis zombie only occur during a trader quest in a POI, or did it occur outside while randomly exploring? can you remember which POI name? did anyone notice any errors that popped up? any server logs would also be helpful. you are welcome to send me the info via direct message and we can troubleshoot more that way too.