[Gameplay]oracle's extract

During a game of ARAM as illaoi on patch 6.24 i bought oracle's extract because we were playing against a teemo. After the timer was up for the extract i could still see teemo's mushrooms even though i didn't have the oracle's eye above my head or the circle around my champ. But the mushrooms would only show up if i was close enough to them. just a fyi. thanks