Lissandra Ult Indicator showing up on enemies in bushes

This is the game: http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2407455947/67950329?tab=overview

I couldnt get a printscreen because windows wouldnt capture my other monitor :(. Basically what happened is shaco would go into a bush in top lane and whichever bush the real shaco was in would have the lissandra ult indicator (hover mouse over Ult icon) around it. The link above is a recreation of this. I'm not sure if the indicator only stays in the bush if I saw the real shaco enter it to begin with, but the indicator did not follow the clone when it left and stayed encircling the bush. It seemed pretty fishy to me.

Also, not sure if I post this here, just googled "league of legends bug report."

Thanks!