Confronting Morcock and his cronies at the mill during the quest to find Timmy will improperly record stats, and possibly cause issues with crime down the road. Any of these bandits that are killed by the player - even if you hesitate and allow them to hit you first - will be counted as a person killed, but not an enemy killed. I haven’t confirmed whether or not this will count as a murder down the line if some of the workers witness it, but I would assume that as a possibility since they aren’t counted as enemies for whatever reason.
I reported this bug nearly a year ago, in July of 2018, but just tested an old save to confirm that it’s still an issue. During that test, I noticed something else odd that I don’t recall happening before: one of the male workers at the mill picked up two different weapons off the ground (from enemies that surrendered), and took off running, apparently chasing one of them while I finished fighting the remainder. I wasn’t able to find a corpse for the bandit, but the townsman came walking back to the mill soon afterwards, acting as though nothing had happened.