In the worlds has created before world limit change it generating full bedrock between y0 and y-64 in openede chunks
Linked issues
is duplicated by 12
Comments 2
Thank you for your report!
However, this issue is Working as Intended.
The report you have submitted is working as intended: Currently, when an existing world is upgraded to Caves and Cliffs, the area underneath saved chunks is supposed to be filled with bedrock.
Please note, that mechanics of the game may change between updates.
Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
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I think it's expected to avoid player falling in the void.
It wouldn't be possible to regenerate/add the cave for a lot reason (impossible in a POV technical, may break player build, generate a block one the player and killing him, may not match with the first generation, generate lava / air under the player making him fall or burn. Etc)