Tested it again, it does not appear to be Communitas's fault, as no tribes appeared on Pangaea maps either. I opened up IGE just to be sure, but the map had none of them while they were present in the IGE menu. Weird thing is that tribes appear on some games, while on others they are completely missing.
The luxuries and bonus resources were present normally. Mind if I post logs? Since they are quite long.
Similar stuff here.
I am playing on a North America map for the second game in a row and both games have been Tribe-less. Could it be the new version of the Community Patch is at fault? this started happening only after I updated that mod.