Ravengard isn't dead in my save, so he is still in prison.
I did rush to the prison to see what would happen, and that part is fine -- Mizora appears and starts helping. But I only bothered to do the rescue up to the point when Mizora appears, so I don't know how the game would handle Ravengard telling you about the dragon now.
It might be that only the interactions concerning Florrick are bugged, i.e. Florrick goes after Wyll no matter what he chooses and Mizora mocks Wyll for having sacrificed his father only in that specific conversation, but I don't know if this breaks anything down the line.
