Zilean's Q explosion doesnt appear ingame. It only appears an small question mark within a green box on the center of the explosion
This only happens to the Bot version of Zilean, if the player picks Zilean, his Q works as intended.
1- Make a custom match/practice tool and select zilean as a bot
2- Start the game
3- Wait until Zilean Bot uses Q
His Q explodes, does damage and the particles appear
His Q explodes, does damage but there are no particles, only a green box with an small question mark within (missing?)