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
MCPE-125674
Mineshaft platform can generate floating without any supports/connections
Open
17
(Unassigned)
484749
Confirmed
Multiple
vanilla-parity
1.18.10.21 Beta, 1.18.0.22 Beta, 1.18.0.21 Beta, 1.17.40.20 Beta, 1.17.30.23 Beta, ..., 1.17.10.21 Beta, 1.17.0.54 Beta, 1.16.230.56 Beta, 1.17.40, 1.18.0
Retrieved
Most likely because the height of the cave is greater than the chain supports can...
[media]Another example here: