The Bug
Some parts of the mineshaft can generate floating without any support or connections to the other parts of the mineshaft, which made it completely separated.
How to Reproduce
Use seed: -2140835688
Go to coords: -114 -1 1604
Linked issues
is duplicated by
relates to
Attachments
Comments
Seed and coordinates for version 1.17.40:
Seed: -1927884317
Coordinates: -106 5 -735

Confirmed in 1.21.44 and 1.21.60.21.
Most likely because the height of the cave is greater than the chain supports can...
[media]Another example here: