[GAMEPLAY] Quick reactivation of Tahm Kench W on minions

I've played a few games with the new champion in Top Lane and he is very entertaining to play, but I did notice this little bug. If you w a minion and quickly reactivate the w trying to swallow it and then spit it out immediately for quick damage and a passive stack, the minion just drops out of his mouth without going any distance or doing any damage to it or anything it would've hit and gains tryndamere's ult for a number of seconds. The minion will get down to 1hp but will not die for a while causing the lane to freeze on that minion while you and your minions try to kill it. It has varied in time from just a couple seconds to I've had it last up to around 10 seconds. Tahm Kench is a fun champion but this bug has nullified a few easy kills and put a halt to fast pushing the lane when the opponent has backed a number of times. If this would get fixed he'd be perfect as I personally haven't noticed any other bugs.