ceaseless maker trait

it says the trait is anomaly and when an enemy takes damage, all other enemies health is reduced by the same amount, in addition enemies take 80% less damage.
I have hit an enemy with ceaseless maker in my party for 24dmg and nothing happens to the other enemies. i have also poisoned the enemy and after poison damage the other enemies still take no damage. Is this just not working correctly or am i doing something wrong

It does not show the damage done to the other enemies outright, but likely it is still doing the damage I think

yeah so you were right, it does do the dmg but it just doesnt show it