Strange that F/GO still haven't implanted the carryover AP for when you level up. Many other games I see already do that and GO's AP goes beyond if you use a golden apple while still having AP.
But yeah, it's a drag having to use all the AP and then continue once you leveled up. I just ignore it as well.
Oh! Look at that!Your experience is almost full!Please, stop it!!I saw that.You still got some AP left, right?I guess I'll go to bed.Hand it over! I'll do the battles for youRattleThey'll just go to waste if you went to bed with that much left.Huh...?!That doesn't really matter, does it?You'll level up with just one more battle!And when you do, all your AP will be refilled!Don't touch my servants!!I played enough battles in FGO for today.Going to bed in this situation should be illegal!RattleIn a way, I'm envious of how they are able to enjoy FGO so much.