Halo 2 MCC Co-Op Audio not fixed with new update?

I have been eagerly awaiting this newest update. I was really hoping that it would address the fact that there is no audio when you play Co-Op in Halo 2 MCC. Does anyone know if 343 is aware of this issue? Or if its being fixed? Seems pretty crazy to think they aren’t aware of something that is so significant. I still haven’t seen anything on it though. And yes, I did download the newest update and try.