Shields and knockback

for those who are posting it as a bug: shields, when they negate 100% of the damage from an attack, can also negate other effects including knockbacks, stuns and other debuffs. this has been a thing for a very long time, if a crit single target shield is causing you to fail a mechanic revolving around knockbacks, stick to aoe shields or/and other forms of mitigation (example being kerachole and expedient).

Are you talking about the 2nd boss on savage? Because in that case the knock still happens, it just instakills you if you take no damage from it. I'm not a very experienced raider but that does look like a bug.