I don't think the functionality is complete yet... I got into a fight with the Tiefling trying to kill the imprisoned goblin at the Druid camp, and went out of my way to knock her out. After I long rested and went back to the camp, they were walking around with 1 hit point... And immediately started a battle with me, meaning EVERY Tiefling in a 3 mile radius also started a battle with. Hoping the knock-out mechanic is fleshed out more for the full release.
I agree. I had the exact same problem. Also with the Tieflings outside of Lae'zel's cage, except they just were dead after a long rest. At the very least there should be someone from their faction to talk to that can drag their comatose bodies back where they came from and maybe talk them down from their silliness.