Sheen Proc/Ability Using The Proc

I noticed a bug where with certain abilities that use on hit effects and as such will use a sheen proc sometimes they won't actually use the proc.

This is very easy to notice when playing Fizz and using his Q, since the Q is a ranged ability you can use it from different distances, if you Q from a short range (close to you opponent) then it will proc sheen but not use it, if you use the Q from a far distance then it will proc sheen and use it in the same move.

This can be a big issue as it can mean your abilities won't deal maximum damage and reduce your overall damage output.