Ekko Ult Trail Bug on Edge of the fog of war

I noticed an Ekko bug in the last game I played versus him. Sometimes, on the very edge of my fog of war, I will see his "Ult Trail" for a split second and then it will disappear as if it moved passed the fog of war, out of my vision, even though he will be on the other side of the map. Even with the 4 second trailing time, there is no way he could have been at that part of the map that corresponds to where his ult trail was. This happens VERY briefly and seems to also happen often since I saw it numerous times during the game.

To recreate this, I reccomend just playing a game VERSUS him and just looking out for this bug. I am not 100% sure how to recreate it but it is there.

Like I said, this bug seems to happens somewhat often, about 4 or 5 times in my last game.