I'm not sure if this is true or not, but I spawned probably over 100 villagers by using a spawn egg and not a single cartographer appeared, so this might be an actual problem.
Yes, I've seen this happen too.
delta
I'm not sure if this is true or not, but I spawned probably over 100 villagers by using a spawn egg and not a single cartographer appeared, so this might be an actual problem.