Varus Basic Attack Animation Glitch

So far I've only tried this in arams, but when Varus attacks, his basic attacks go a little to the right or the left. So for example, If I hit a minion, It will look like I am hitting the air to either the right or left of the minion, the minion will still take damage as normal, but it does throw me off as a player when I'm trying to attack something and it looks like I'm hitting nothing. This animation doesn't last all game, It will happen for maybe 3-5 basic attacks, then go back to normal, but it will happen mutiple times during the game.

Unfortunately I couldn't screen shot it, It goes way to fast for me to be able too screen capture it.

I had another friend who had also experienced this, also in arams. He lives in a completly different state, if that means anything.

I dont know if this happens in normals games, but it happened to me in 3 different aram games, and i know of 1 from my friend.