Zhonya's During Taunt [Gameplay]

I was playing against an Ekko with a Galio on our team, and consistently, while taunted, Ekko would be able to use Zhonya's Hourglass during the Taunt From Idol of Durand. He was able to do this consistently every time he was taunted so i think it should be easily reproducible under those same conditions. I'm not quite sure if this was intended but it sure did have a ridiculously big effect on our game. D: