Jeremy,
I updated to the latest version and I went into my Jetpack settings and noticed that my connection to wordpress had been lost so I connected again and tried to setup my connection to my social media pages with Publicize and ran into the same Facebook issue. So I went back to the beta version and still had the same Facebook issue. So I signed out of my Facebook that I had open in another tab and tried again. This time it worked and I got the option to select the proper page. I don't know if this workaround will help with the latest version but I'm for now I'm going to stick with the beta since it is doing what I need.