The bug
Ice spikes generate way below the ocean floor in caves.
Seed: 6927193748404355117
/execute in minecraft:overworld run tp @s -2775.67 -1.43 1593.51 25.04 -13.76
Linked issues
is cloned by 1
is duplicated by 31
relates to 2
Attachments
Comments 7
Affects version 21w07a.
Additionally in case this wasn't clear yet, this only happens in frozen ocean biomes and this is not ice spikes biomes.
Affected in 21w08a as well. Frozen_ocean / cold_ocean, not ice_spikes. They also all seem to stop at y=0. (not specific to that world, just worlds in general)
[media][media]Affects 21w13a. They still stop at y=0. The ice is sometimes replaced by stone in the cave ceilings (but have ice below and above).
I concur, this appears fixed in 21w14a - however, it does require a new world or new chunks... any chunks generated in the affected version remain unchanged after the upgrade.
Yet another example (best seen with night vision as others have already shown):
Seed: 1083719637794
Coords: /execute in minecraft:overworld run tp @s -82.41 12.13 -199.47 79.80 -5.10
i can confirm, the iceberg below generates under the cave.