Our bg in alliance war has been using white Magneto's prefight on Korg on Node 23 to make the fight way easier.
It has been working like a charm for the whole season and I'm the one who took him down with Ghost everytime.
Today, we used Magneto's prefight and I went in like every other day and BOOM no passive stuns, the stuns were all normal stun debuffs thus he was shrugging them off and by the point I realized that the prefight is broken, I was stuck in my corner and got combo'd into oblivion by an unstoppable and unblockable stubborn Korg.
Short clip of today's fight showing the stun debuff:
https://youtu.be/ebPrkmXfgHUVideo of how it SHOULD work (and how it was working until today):
https://youtu.be/KsF39O-x1XwPlease look into it.