Increased Effect of Withered from jewels and Strip Away on Blasphemy are both not working.

Without the jewel I have 40% increased effect of Withered from the Wither away branch, which gives me 70% Withered when fully applied on a mob with my Dark Effigy. When I equip a jewel with 10% Increased Effect of Withered in my passive tree, it should increase the total amount of Withered to 75%. However in reality there is no change, and the total amount stays at 70%.

When I equip Strip Away support gem to Blasphemy with Despair socketted, it shows that I have 30% exposure effect modifier in the expanded tooltip, however there is no change to the amount of resist removed on the mob's Despair debuff.