This Katrina bug needs fixed

Its been about two months since this katarina bug has been happening and im getting upset about mid way through the game my q and ult and recall stoped working and left me useless in teamfights so i had to go AD katarina we eventually lost because well what can i kat do without q ult and recall :/ please riot fix this, (this bug always seem to happen about 15-20 minutes in game)