I was playing as a soldier in Jeor Mormont's party (freelancer mod). And for some reason he just attacked his vassal Jarmen Buckewell. I don't know if this is a bug or not, but he just fought him.
Screenshots would be good here if possible. Any other reports of this happening with anyone else?
Cheers.
Im pretty sure i found the reason for this. Will need testing for V0.5.0