[Gameplay] Arcane Sweeper looses detection on Teemo shrooms when they enter stealth even in range

Hello I've been playing Ascension today and I've noticed when Teemo places shrooms Arcane Sweeper initially can't detect then when they enter stealth. Pretty annoying as a melee character when you right click a visible shroom that breifly goes invisible despite being in detection range and you walk into the shroom instead of attacking it to kill it.