I loaded my save at the start of the game, and once the setup period ended (1:07 in replay) it gave a 'role list error'. This was weird, because AFTER the random patch hit, I had already used this save several times without issues (replay of a normal game with this save/settings also attached).
When the game started, unbeknownst to me, there was only one mafia, the GF. Only one citizen was meant to be possible in the save, which was from town core, but there were three. This would suggest the mafia deception and the mafia support became cits.
Replays below:
Bugged game:
one mafia bug.SC2Replay
Normal game with same settings:
Attachment 5158