There was a sneaky patch that wasn't listed a few days ago, must have been a hot fix of some kind. But it came with some bad effects, Trolls In particular now run once you get them to low hp. I can't seem to figure out how to kill them anymore. Letting the Troll hit you to keep it's aggro doesn't seem to work. Using your environment also doesn't seem to work as if it runs into Rocks/Trees or whatever and you get free hits on it, once you get it to 40% Hp it runs away. Sometimes I can get it to lower hp, but each time it runs away. There doesn't seem to be a pattern to it or a way to stop it that I can see. Would love to know if there is a way to stop the Troll from healing and running away thanks!