Ekko bug extremely easy to replicate

Hello. Im here to report an Ekko bug that I ran into during my previous league game. I had set up a W to stun the enemy lulu. When I procced it, I successfully stunned her. I then had ult back away from her to avoid dying. However, when I ulted back, I somehow procced the stun AGAIN, resulting in a 3+ second stun that ended with Lulu's death.

To replicate the bug in question, you need to first proc your Parallel Convergence. If you've ever played Ekko, you'd know that after you activate it, it leaves behind a little "ghost" of itself. Now, after proccing the stun, you need to either

a)activate your ult within the ghost

or

b)end up in the ghost after activating your ult

or

c) Ult THROUGH the ghost

This bug is EXTREMELY abusable. Quite frankly, you don't even have to try to be doing it to pull it off. If I wanted to, I could go abuse it next game.