Same bug for me.
Unfortunately it took my 4 hours to realize what was going on since I talked to Nicolas with my non-face character. I kept playing talking with my face character, only when I got an yellow exclamation mark with one of my team mates did I realize that I can't talk with my main one.
This is a major cock-up. I bet a ton of people are going to loose a lot of time on this bug. I wonder how many won't have a save file to revert to. :(
