Honestly dont know if its a bug or a feature but im leaning towards it being a bug
When it says shadow skills now use rage they dont, Actually they dont use any resource at all. you can just spam and spam and spam every shadow skill without ever running out of resources. Again, dont know if its a bug or feature. Might i advice to allow skills that originaly use willpower as a resourse to use rage and skills thats use rage to consume willpower.

Good luck on your continued efforts to fix the game