Uyi Rune

I have the Uyi-Rune equipped which in its description says “Enemies’ Vulnerable debuffs now cause them to have 0% chance to dodge or deal critical damage.”
But when i use Aftermath which first debuffs enemies with Vulnerable and then attacks them 3 times they still dodge my attacks.
It works for normal attacks afterwards, but not with the 3 attacks directly from using Aftermath.