I have encountered some bugs in honour mode, I never had in a normal playthrough: Halsins quest to find Thaniels second half is bugged. Oliver seems to have vanished from the game now. I fought him after going through his portal and now , he is gone on both sides of the portal.
In Tactician I had the problem that the quest seems to bug out if you go straight to Oliver after helping Halsin at the beach, without talking to Halsin in between. I know, it's not much help for HM because you cannot reload but maybe it helps prevent the issue in future attempts. He also does not seem to recruit properly unless you actively put him in your party at least once.
