Devour: Too many bugs

> First off I gotta say, I love Tahm Kench, he is an interesting mix between a bruiser and a support but the thing that stops me from playing him more than I do is how horribly bugged his Devour is. So your normal lane harass is to eat minion and spit it in the enemies face, also with it being your waveclear, the problem is you can't do that when the ability automatically goes on cool down after you eat a minion, so instead of getting your damage or farm, you only get one minion kill since you have to awkwardly reposition yourself to be facing your target, which if they notice it, they can juke it pretty easy. Well it still has it's saving capabilities, which can be pretty game changing, unless for some odd reason you can't eat your ally. Riot, I REALLY want to love Tahm, the problem is with these bugs and how they come up randomly, he isn't a secure pick. I believe there were also bugs if you spit an ally into a wall it hurt them (I must test that myself to see if I heard right), so yeah, just saved your ally from the brink of death....and you kill them. Till those bugs are fixed I gotta hang up the top hat and wait