Kaisa unable to spend champion level up points (somewhat game-breaking)
Somehow managed to level up my E mid fight (wasnt in base) most likely because i was at 98% attack speed and gaining a level from champion kill increased my attack speed to the 100% mark needed to evolve the ability. After leveling up the ability mid teamfight I was unable to spend champion level points anymore. Looks like this champion needs more hot-fixes because not only is she bad, but also bugged.