So far I have run twice as a tank, twice as a healer, and many times as a DPS.
When I wasn't the healer, I noticed something strange. The healer is 'passable' outside of boss fights, but during boss fights the healer REFUSES to heal herself.

My healer ended up dropping to 60 HP due to the fact that she stood in a puddle of acid until I had to force her out by disengaging the final boss and trigger her to walk toward me.
Then I re-engaged. She stayed where she was and continued healing the tank and everyone else. but she remained at 60HP (with only the small default regeneration bringing her any higher) for the rest of the fight, which was a good 1 to 2 more minutes.

She is now set up with 4 defensive stance and 4 independent... I had her on Defensive But she STILL has this problem. The last run I did, she died to the end boss because she refused to heal herself even ONCE during the boss fight.

WHAT IS GOING ON?!?! WHY IS THIS HAPPENING?!? Anyone else see this garbage?!?