When using drain and maelstrom in normal form on CC immune enemies these powers do no damage. Same as on console.
Here's a video of her in both forms using both powers on the two different dummies. Damage numbers on the regular enemy while nothing on the raid or cc immune enemy. Drain in Phoenix form losses it's slow therefore gaining damage again.
Anything on this one yet? Been around a while and it's also doing the same thing on console.
I just recently fixed Drain so that the damage part is separate from the CC effect so it won't get blocked by the immunity. I will double check Maelstrom and make sure it gets the same treatment.
You're the best @zWolfiez