Rengar inifite bolas & W

Just found a glitch with Rengar in 6.4, when you do a perfect combo with 4 stacks, it sometimes gives you 100 % cdr on bolas & W. The glitch ends when you go in ferocity (when u hit something with w or e). Unless you hit anyone, you can infinitely throw your bolas or W.

It's me on the video in a normal game where I found the glitch.