I tried updating my world from 1.14.2 to 1.18 and when I reached the border between the new and old generation I found a mineshaft in an iceberg, and I was like this: ._.
So I tried to verify something, I copied the same seed from my world and generated a world in 1.18 with that seed, I went to the same coordinates where I found the mineshaft on the iceberg and I found a mineshaft from the plateau and arrived to the conclusion that the structures of 1.18 are generated in blending
Coords: -1030 82 -943
Linked issues
is duplicated by 9
MC-242026
Terrain blending can place structures in the wrong biome
Resolved
MC-242037
Desert Village in Plains
Resolved
MC-243045
Woodland Mansion generating in Frozen Ocean Biome
Resolved
MC-243163
Witch Hut Incorrect Generation
Resolved
MC-244395
sunken ship generates in the middle of a plains biome
Resolved
Attachments
Comments 4
Thanks for your answer, The requested world has already been uploaded, I tried it before uploading it and it kept generatingce, I tried it in pre-release 4 and it kept happening
Might relate to MC-241308.
Apparently, it was also possible for mineshafts to generate in icebergs in 1.17.1, without upgrading your world or using blending. See this message from the Minecraft@Home discord server.
-3838169757931151396/tp -11877 ~ 6561Like the example in this report, the example from discord has a badlands biome next to a frozen ocean biome.
Please attach your world, so we can access what happened. If you have the un-upgraded world, that would be best.
This is a highly difficult task to exactly recreate the chunks you generated.