Structure Generation Spawn height Offset

Status
Works as designed
Issue description

So i added a Cave from terraria {Corruption} and set offset height 32. but now it all generates in the air above the surface. i had underground . pls fix this

 

 

SEED:-1958882847082867026

The biome is the purple biome

Issue comments

This is normal. An offset of 32 means that all structures will now spawn at the location as before + 32 blocks higher. Instead of spawning underground, they now spawn 32 blocks higher, in the air.

i mean i would like to have a cave,you can go from the surface to the underground i send you the mcr ok? and the seed where the aves spawns