TK(Tham Kench)couldn't eat either enemy or ally shaco.

I found this bug out when I was in a rank game, when I trying to save a dying shaco with my W, it just shows nothing, shaco is uneatable( although it didn't shows) and I watched him die in front of me and he ping me with question mark......

The second time is when I playing a norm, when I have 3 stacks passive on enemy shaco, I just couldn't eat him(same reason with ally shaco I think) but my w will still go on CD, that is werid and It makes me die in that gank =_=

Riot bug fixer, pls fix it, I will not play TK untill the bug is slove.=_=