Overheal/Ravenous Hunter bug

Ravenous Hunter does not proc Overheal even though the description of both runes imply they should. Ravenous hunter heals for percentage damage dealt and Overheal grants a shield for healing over max hp. However it seems that when full HP, ravenous hunter stops counting as healing, which is not stated anywhere, most likely just a easier way to show the real amount of damage healed after game. This is a indirect nerf on champs that want to run the buffed overheal that don't heal from lifesteal or their kit but can lifesteal quite a lot from ravenous hunter and their abilities such as Ryze and Kassadin. Please look into this or change the description of ravenous hunter to say it only activates below 100% hp.