I've been playing with Alex's mobs for a while now and all of the mobs seem to spawn fine, but while looking for a platypus for a rad hat, I cant get any to spawn. I've tried turning up the spawn values in the configs and still nothing. I've tried creating single-biome worlds as rivers and there is no platypus to be seen. I'm playing in 1.19.2, alexs mobs version 1.21.1