[MC-245337] 1.17-1.18.1 cave generating glitch

theres a clean chunk boarder in the new cave generation on 1.17 servers updated to 1.18.1

[media]

Attachments

How did that chunk errors appeared? I appear with no clue!

Duplicate of MC-242658, which was marked as works as intended.

no i used no datapacks on my server

i went from 1.17.1 full release to 1.18.1 full release

Then working as intended via Mincreaft 1.18 Changelog

Passage in changelog

UPGRADING OF OLD WORLDS

The transition between new and old terrain is less “cliffy”
Will surface height blend? Yes.
Will biomes blend? Yes.
Will caves blend? Your mileage may vary.
In old chunks, if there is any Bedrock at y=0, the sections below non-air blocks will be filled with new generation
The old Bedrock between y=0 and y=4 in old chunks gets replaced with Deepslate
A new Bedrock layer is placed at y=-64