[GAMEPLAY] Kog'maw Ult has larger hit radius than is visible.

Just finished playing an ARAM where a Kog'maw's Ult had a much larger hit radius than it was supposed to or that its particle suggests. I fell victim to it at least 6 times that I could notice. He was playing AP Kog, not sure if it was related to the new echo item or not. How am I supposed to try and avoid something I can't see? Wasn't this why Nidalee's spears were fixed way back when?