Pool Party Ziggs Invisible Bombs

Not sure if it's limited to just Pool Party, but I just got done with a match where every single one of Ziggs' abilities was invisible. I thought invisible Nidalee spears were terrifying, but if I wasn't Poppy I think I might have been traumatized by invisible explosion genocide

I could only see the VFX/particles around the bombs (the little water rings on his E, for example), but the bombs themselves were missing, even his ultimate didn't have a model, just its indicator.