Barbs immune to damage during UR/Savior

Some combination of defensive skills is causing barbs to not take damage during their UR/savior up time. It’s not spiteful blood b/c its my skills that do the damage. It was at least something slightly manageable when barbs would just stay at 1 hp during the fight but now they just heal to full any shield is untouched. Essentially they have a whole extra life. Anyone else notice this?