Raiment of the Jade Harvester DONT WORK

The property of 6 items partially does not work.
“(6) Set:
Soul Harvest reduces damage taken by 50% for 12 seconds and consumes your damage over time effects on enemies, instantly dealing 10,000 seconds worth of remaining damage.”
I don’t see any damage from using Soul Harvest. The taking damage reduction works correctly after using “Soul Harvest”.
“(2) Set also works correctly:
When Haunt lands on an enemy already affected by Haunt, it instantly deals 3500 seconds worth of Haunt damage.”

Are you using the Creeping Death passive? If not, that’s why.