Kayn bug

So i was playing league and i was playing the new champion "Kayn" and when i got to the transformation part i waited for the other form (Because that's what i wanted to play) but when the time came that i could choose that form it didn't allow me to click on any of the transformations i then tried to leave and join the game again to see if that would fix it but that comepletely removed the feature (As seen on the picture linked)