Poppy's Q has no cap listed against epic monsters.
Yet, the cap must be literally "zero" because it legit does only 120 total damage to baron... that's 60 damage right away, and then 60 more damage after the delay finishes. It's literally not enough even to tickle the Baron.
Amazing that nobody seems to have noticed this, I guess nobody cares about Poppy much these days. Please fix it, Riot.