I'm just at the start of the game, but even now I find something that I would call a bugy mess or poorly thought out thing and that is Battle Tutorial.
The windows didn't dissapear 'till next tutorial.
When there was tutorial about mana, why it didn't started when I was on Raina or why couldn'n Sagara have some magic. When I opend the mana window and was confused why there wasn't anything (fact that Sagara was behind that tutorial help also didn't helped).
BTW: even that rectangle around Raina didn't dissapeared.
That is it for now. I will report you later. (Oh and I'm using the english version and I control stuff with mouse mainly)