Face of the Mountain

I tend to take Sion support for late game take and with Face of the mountain, clearing lane with the adc is quick. The bug appears when Sion kills multiple minions and Spoils of Wargoes off. The visuals with the spinning orbs are supposed to disappear with each available minion kill but Sion will keep the orbs while the Spoils stack is clearly at 0. There are even times when a 5th and 6th orb appear. Simple Visual bug http://imgur.com/Z8VYKpe http://imgur.com/Ex6FeIN