I play Scrapper. My test is as follow:
I go to training grounds. I give her 1800 Expertise and I set Crushing Smite with Amplified Damage mod.
It applies the debuff to the target which increases its damage taken by 6% for 8s.
With 1800 expertise I would expect the debuff to last around 78% longer but it isn’t.
It is dead 8s both on scarecrow and any other named mob I spawn.
I went and tested in a world with a named mobs and it is the same the duration doesn’t seem to increase.
Whats going on? Am I missing something?