Sasha's Quest (Her own Hero) Engraves not working?

Sasha’s Affectionate quest (Her own hero) When you go to the dungeon in Facility x-301 Restricted.

You cant use your Mayhem ability, your burst meter is empty.
Not sure if this is effecting all engraves, but Mayhem doesnt appear to be working.


I’m having the same issues, is it supposed to be like this?