As of today:
Noticed the following errors:
1. Something strange is happening in the cave with the owlbear. If the mother calls for a helper in the form of a male (legendary action), the child remains hostile after killing them and cannot be recruited in the future.
2. The corpses of Mairina's brothers. Sometimes both are lying, but sometimes, either both or one of them periodically do not appear in the swamp. What it depends on, I couldn't figure out.
1 = yes that change was last hotfix... you can just leave the cave with the cub still alive and return after a long rest she should have moved on to the Goblin camp where you can talk to her after
2 = yes the swamp has two different maps and it depends on you passing a test to "see' the real swamp... as far as the story goes its the same result seeing one or both brothers dead and you really only miss out on looting his knife