Altar spawned enemies immune to Shield Crush

Hello,

I'm playing shield crush and I've noticed what seem to be a bug :

- playing with red altars, some monsters (named void flayers / skulkers) are simply immune to my shield crush skill BUT not other skills, usually when it happens I can kill them just fine with Shield Charge
- Monsters are not evasive, they can't block my attack due to a mastery I took and again, I can damage them just fine with another skill beside Shield Crush

Don't know we're enough playing this for you to be made aware of this but it would cool to look into it.

thank you