When trying to add features to vanilla biomes using biome modifications it does say that it adds the features in the console but they does not seem to spawn

A quick workaround until this is fixed is to mixin into whatever method suits your feature in DefaultBiomeFeatures

Or use json

A quick workaround until this is fixed is to mixin into whatever method suits your feature in DefaultBiomeFeatures

Ye, this is what I've been doing mostly but it's a lot more work.