"Your Go" in the achievements did not collect the achievement.
I only casted spells during my opponent's turn and won the game. It did not count it.
It says "win a game where you only cast spells on an opponent's turn" and that is exactly what I did.
This is not an easy achievement either, so it would really be great to not only have the bug fixed, but also just give me the achievement since I already completed it.