Batwoman got stuck on the Balcony and wouldn't come down during the duo, so we couldn't finish it, because it kept saying "EVADE" when we'd try to attack her, and we couldn't aggro/lure her out.
Thank you for the report. I'm adding a safeguard to prevent this from happening, but that fix likely won't be out until Saturday. Apologies for the inconvenience.
When you do the theater fight where you defend Batman against his mates (Batgirl, Batwoman, Catwoman, Red Robin, Nightwing), one of the attackers can spawn up on the upper balcony. They don't move or fight. If attacked, the first few attacks pop up as Evade...then the target (Batwoman in our case) starts taking damage but when they're still at 80% health or so, they reset and attacks start being evaded again. We did get her off the balcony eventually and finished the fight by nudging her over the edge. Once the character is off the balcony they appear to act as normal. Didn't have a pull, so not sure if that can be used to get them off the balcony.
This can also occur on the last boss, I've had some spawn up high on the neighbouring buildings and had to knock them down to ground level before we could continue with the next wave.