My entire ability bar, including summoner's and item actives grayed out and unusable, causing a loss

About late game, all of my abilities were bugged out and only reactivated once my ga popped. We lost the team fight and the game easily because I literally could not use a single ability. Shown in the link. I started to get really strange lag out of nowhere with nothing fixing it and then every single ability just grayed out. My team was getting upset because I literally could not do anything and we lost because I couldn't fight.