No Blind, Enemies won't stay dead

I added the 'Blind' support gem to Fragmentation Rounds. When attacking, it shows the blind symbol on enemies but they do NOT blind and worse, they do..not..stay..dead. They die for one second then jump back up and keep coming. Over and over.

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TC69#0389 wrote:

They die for one second then jump back up and keep coming. Over and over.

Are these minions? Then a rare monster with "Revives minions" is nearby (or sometimes even farther away). You need to kill him first.