Rengar Glitch on the PBE

I have revently found a rengar glitch on the PBE. To do this glitch, you need to have 4 ferocity bars. Once you have 4 ferocity bars, go into the bush in blue then you wanna jump and spam the w key until you have 5 ferocity bars and dont reset it! Go out of blue into your base then start spamming QWE and its on a 1 second cooldown, but once you damage an enemy the glitch will reset so if you wanna keep using the glitch do not attack an enemy or even anything you can damage. So thats the glitch i found, I thought it was pretty cool and fun. The enemy team would laugh at it and entertained them.