I have seen issues with quest completion. Both times I finished the ‘Teleporter’ quest, the ‘Every Mother’s Nightmare’ was marked as completed instead. In one case it got even worse: the Teleporter quest completely disappeared from the quest list and also the archive button became permanently inactive. At some point later this was restored (archive enabled, teleporter re-appeared but still the wrong quest marked as completed). Another problem was with the Purged Dragon quest. I did the same things in each run, but one time was marked as completed and the other not.
