[GAMEPLAY] Lux Ult Bug

I was playing a game , and the other team did something interesting 2 / 3 times in game , he gived ult 2 times at once , first when she did this she pressed r then afther 1 sec she can press again , 2 nd time she can do ult 2 times at once instantly , I don't know how to reproduce the bug but I know you need to give q or e before use ult , I don't know if sure gives damage both or it's just a visual bug but it's better to be solved Best regards, ShadowOfTheFear (my Summoner name)