I submitted a bug report about it on November 2nd, and on November 6th got a response:
Hello,
Thank you for your report! I've passed this on to the team to investigate.
Regards,
Diego
I haven't heard anything else on it. I might submit another one at some point so that they know it still hasn't been fixed with any of their patches yet. This has been such a frustrating blocker. My wife and I have multiple playthroughs that can't move on to Act 3 together. We have resorted to hot-seating one of the playthroughs, switching who is playing while the other watches, which kinda works to some extent, but is not nearly as fun of a way to do it.
