Unfortunately it looks like the bug continues to reproduce. After disconnecting from team create and waking my PC from sleep (Windows 10) I was unable to select any group games or view the group selector.
I am having a very similar issue. My computer never slept. I am operating on a windows 10 PC. I just simply cannot get into my group game. My girlfriend that is in another state, operating off of a Macbook, also cannot access the game. Yet our developers can. This is the error: