The bug

When loading a new world and trying to use the locatebiome command you cannot find any biome generation of the modified badlands plateau or mountain edge despite its unmodified variants being able to generate regularly. But if you load up the biomes in a single biome buffet world you'll spawn in with the generated biome features and it'll say ocean instead of the biome name and spam out "Invalid biome data received, starting from 0" and continuing with -1.

How to reproduce

1. Download the Caves and Cliffs Datapack and add it to the world you're trying to create.
2. Then go into the single biome buffet world setting and chose either modified badlands plateau or mountain edge.
3. Look at the F3 menu to see the biome named to "ocean" and the game output log to the log with spammed "Invalid biome data received, starting from 0".

Weird work around

1. Download the Caves and Cliffs Datapack and add it to the world you're trying to create.
2. Go into import settings and import the "worldgen_settings_checkers".
3. Use /locatebiome and teleport or fly south or north to said biomes.
Noticed how in the checkers world, they generate without spamming the log with the "Invalid biome data received, starting from 0" and how in the F3 menu it's the name of the biome.