[GAMEPLAY] Lux E bug. Game thinks there is an E on the map for the rest of the game

I just played a game of league as lux mid. At some point in the game around 30 minutes or so, I cast an e. And then the ability never came off cooldown. It was greyed out as if there was still an e on the map and stayed like that all game. It said that it cost 0 mana and that "this ability cannot be cast right now". I tried getting executed to the jungle to die and see if that would reset the e and it didnt work. I tried resetting my client and that didnt work. It is for these reasons that I dont think the problem was on the client side but rather the server side.

For what it's worth I ended up going 18/3/20 (that includes the purposeful execution to jungle) and we still lost this ranked game. Super depressing.