Greetings! As of right now, I noticed that when you level up, it takes a few seconds for MP to go to 100% instead of being instant. As for HP, it does not go back to 100% on level up until you get hit by a monster, it seems to be at 100% in reality, but it is not visually. Depending on the damage you obtain, you can notice your HP go back to almost full minus the damage you just suffered. For example, if my HP is at 30/50 and I just leveled up, I get hit by 10 and my hp will be at 40. You will notice that you heal from 30 to 40 the next time you get hit since technically your HP was at 100% even if you couldn't see it at first.