A warning shows up saying:
“This game mode doesn’t support Twitch. If you accept this mission you will be disconnected from the service.”
I’m hoping this is a bug. There isn’t anything about it in the patch notes and this is how I’ve been playing for the past year, prior to the chaos wastes patch.
This has been my main mode of play as well. It is limiting to separate QP and Twitch without adding functionality to Twitch Mode(like matchmaking and map randomization).