When using Jax and recast E for the stun it procs Sheen passive (assuming it is off cooldown). However when I play Gragas or other champion, recasting an ability (like Gragas Q) doesn't proc it. Not sure if this is a bug but it felt weird.
Passive toggle abilities such as Blood Scent or (old) Frost Shot do not proc Sheen's effect but active toggle abilities such as Ravenous Flock do.
Could this be something to do with the way Riot codes recasts? Perhaps they noticed this for Jax (being a frequent user of Sheen) but not Gragas because that isn't his major damage source.
Are you absolutely, 100% certain that the Sheen buff is granted on both of these activations? As in, you start Gragas' barrel, attack something to use the Sheen proc, wait 1.5s, then re-activate the barrel and get another Sheen proc?
