I leveled up Sigurd in the arena, and he did not gain HP. According to the growth rates page, Sigurd should have an HP growth of 110 with holy blood? I tried some more and it happened more than once. Can someone please explain? Does the arena disable holy blood bonuses or something? Or is this a glitch?
I don't think it's the level up bug, because Sigurd did get other stats (skl, spd, lck), and it was my first battle after entering the arena.