Here a list of skills not working properly that I have found so far.
Frost knight:
The Fury buff from savage Slash does trigger but it gives 0% damage increase.
Inquisitor:
The Poison Cloud of Virulent Slash deals 6 times 66,67% damage instead of 3 times 66,67% meaning the DoT is now 400% over 3 sec instead of 200%. I tested this Several times by comparing the damage of acid spray 1 with the DoT damage.
The shield focus passive skill does not raise magic resist by 10/15/20% but it raises magic resist rating by 1000/1500/2000 meaning it's very good at low lvl but will be much worse at high lvls.
Turmoil says to increase DoT damage. After testing Turmoil 1 gave 0% increase in DoT damage instead of 30%.