[Gameplay] Scorched Earth Renekton

I noticed a bug while laning top against the Scorched Earth Renekton skin. The bug occured after I ran away from his ult. When I escaped from Renektons ult, he was still in ult when he dissapeared into the fog-of-war. The Next time I saw Renekton the dust storm particle effect of his ult was still swirling around him and continued to do so for another full ult timer starting when he returned to my screen. The effect was replicated later that same game after Renekton used his ult to escape from my ignite. He ran into the fog-of-war and next time I saw him his dust effect was still up. This could related to the health bar bug in the new Summoners Rift Beta. However I thought I might as well report it just incase anyone else has noticed the same thing. It could possibly effect gameplay by causing someone to believe Renektons ult was active stopping them from securing a kill they otherwise would have gotten.