[GAMEPLAY] Tahm Kench's W (Devour) cannot "Target Champions Only"

While holding your macro'ed "Target Champions Only" button as anyone, your smart cast skills will not highlight minions/jungle camps (visual portion of target champs only). This visual part is consistent with smart casting Tahm's W, but the **functional ** part does not work. It acts as if you are not even holding the "Target Champions Only" button. However, Tahm's W will still be able to eat minions and he WILL eat a minion even while holding "Target Champions Only" if there's a minion in the way of the desired champion (allies and foes are affected). This is a very debilitating bug given the nature of your typical usage of W on allies while they are in a minion wave.

100% REPRODUCTION RATE STEPS:

1. Bind "Target Champions Only" to any key.
2. Go near some enemy minions and hold down this newly bound button.
3. Smart cast (but do not yet activate) your W, and hover over the minions to verify that the visual portion of "Target Champions Only" works as intended.
4. While holding the button and hovering over an enemy minion, press W. Although it appears that you cannot eat the minion (and you should not be able to), you will indeed eat the minion.

I can describe my typical rune page if the conclusion is some odd interaction with runes. Just ask.

Thanks!