Allied Ranged Minions Firing Smite Icons (Team Builder)

Sorry I don't have physical proof of it, but I was playing Zilean bot in Team Builder when in one of my games our Ranged minions fired Smite Icons in place of their normal particle. There wasn't anything noticeable other than team composition that may have impacted it, I played my games back to back with the same stuff. Happened on Blue side, but only on one game