Yup, me too. Been removing mods one by one but nothing has changed so far. Noticed though that if you go through a portal, and return, the enemies can be attacked. Will let you know if I figure out which mod is doing it Update: Getting rid of TreeRespawn by Aedenthorn seems to have done something, but it could just be a coincidence. Will update again if it happens. Do you have this mod installed as well?