The Bug
There is no bedrock at y=-64 when converting a world in 21w44a
Reproduce
Create a world in 1.17.1
Load this world in 21w44a
Go at y=-64
Observed Result
There will be no bedrock
Expected Result
There would be bedrock
Linked issues
is duplicated by 11
MC-240497
Bedrock doesn't generate in old chunks after updating a world
Resolved
MC-240509
no bedrock on the -64 layer
Resolved
MC-240522
no bedrock is created under the world
Resolved
MC-240527
no bedrock in updated worlds
Resolved
MC-240551
Bedrock is not generating under existing chunks
Resolved
6 more links
Relation to MC-239854