Super Weird Mordekaiser + Rengar Glitch

In what may be one of the most bizarre bugs I've seen this year (Ha, it's January) it appears that when Rengar dies in stealth with Mordekaiser's ult on, the clone is invisible, but can attack as well!

As if the Rengar nerfs weren't bad enough, if you play him against a Mordekaiser it's possible that your team will be attacked by an invisible bruiser?! Sounds a little extreme to me!

Check out this video uploaded by RaaTaZz:

Chances are, this isn't quite working as intended and will be fixed Soon TM

I AM SORRY FRIEND!