Fences can fail to connect in mineshafts

The Bug

Fences can fail to connect properly in Mineshafts. Might have something to do with the chain connection to fences.

Reproduce

Seed: 6410084222843938435
Coords: /execute in minecraft:overworld run tp @s 250.24 24.00 1861.10 -1486.34 15.90

Observed Result

The fence wasn't fully connected

Expected Result

The fence would fully connect