I downloaded this and tried to start it up, but it doesn't start the game for me from the lobby. I select my difficulty by right-clicking the sign, right-click on the "ready" sign, and it says "Ready? Make your selection below". But there is no more option to make a selection, even if I hadn't already selected my difficulty -- right-clicking does nothing. And nothing else happens. I can't see anywhere else that I'm supposed to go -- there's no exit -- and I would assume it SHOULD tp me to my starting position, anyway.
Is this just not working in 1.12 yet? Or am I doing something wrong or missing something I should be seeing?