default biome setting not respected for entire island
Expected behavior
the whole "island" to be the default biome
Observed/Actual behavior
3d biomes break this setting and it generates biome data as if it was a vanilla world

Steps/models to reproduce
play with caveblock
BentoBox version
Plugin list
No response
Other
suggestion maybe add a toggle for vanilla biome gen i could see why you might want that but having the whole island "PLAINS" adds to the challenge and allows addons like greenhouses to still be valid in this gamemode
CaveBlock uses Vanilla Cave generation. If it is used, biome is applied in caves by Vanilla Generation, and I do not think it can be changed.
Applying biome once more after chunks are generated would cripple the performance even more.
And I am not so expert in World Generation to create my own "cave" generation mechanics that would not change biome.