[Gameplay] Some Issues with Tahm Kench's W

Now, I god damn love Tahm Kench, he is fun to play as and feel balanced for the most part, but one of the problems I have been having is with his W, more specifically when used on minions (there are some other problems I've felt with the others, but I think those were just coincidences and not bugs) . For some reason half the time I get to choose when I get to spit them out, and the other times when I hit W again to aim and fire it does nothing. In fact in my last game I had a time when he just flat out ate one of the minions, didn't turn red, didn't have a timer, just ate the bastard and it went on cooldown.

Just to recap, sometimes when using Tahm's W on a minion/monster, he will eat it but you will be unable to aim and shoot it and as such can only fire it when the timer runs out.