In the newest minecraft snapshot (21w37a), a generated a new world and started flying around to see all the new stuff, but i came across something. I was in a desert biome which had next to it dripstone caves that generated above the ground, all the way up to y=70. The
Reproduce
seed: 7749504688249292943
cordinates: /tp @s -1088 ~ 1371
Expected Result
The Dripstone Caves would generate underground
Linked issues
is duplicated by 2
Attachments
Comments 5

Can still reproduce in 21w38a.

Can still happen in 21w40a
Seed: 324038488
Coords: /execute in minecraft:overworld run tp @s 915.93 150.22 -1046.07 2546.96 50.52
@unknown, you are most likely experiencing MC-238506.
Can confirm in 1.20.0 (Sorry for the low quality image)
Can confirm here.