Aight, I don't think I've ever seen this happen before.
When day 5 should have started, instead of starting, it immediately ended. It then returned to night, during which voting happened to open up even though no one besides the crier could talk.
After that night, however, day 6 started, and game went normally from there.
This might be related to the Marshall role, but it is uncertain.
glitch.SC2Replay