A while ago, I completed the Stefan quest, but didn't get the extra 33HP. So I went and checked my attributes, and sure enough, I have all three of the quest flags. But still only 266HP, now, the way I see it, there are two possibilities.
1) The flag was, for some reason, not removed from me in the reset.
2) When I completed the quest, the flag was set onto me, but the HP wasn't.
Either way, somehow I don't think I'm the only person who has/will have this problem
