Sacrimony from lich shadowcaster doesnt work.

I m playing the steam version of the game with patch 1.03 and my party has a lich shadowcaster to boost death spell and an abyssal spectre casting poison gas with the uka rune to double poison damage and 4 others. When the lich shadowcaster isnt present in the party the poison spell deals 146 points of damage and when he is in my party the poison spell from the spectre still deals 146 damage.
Shouldnt the poison spell from the spectre deal more damage with the boosted int from the lich trait?

Sacrimony just increases spell damage, but Poison damage comes from the afflictor’s Attack stat so it isn’t affected by this trait.

Thanks for the answer.