The Bug:

Abnormal cuboid shapes can occasionally generate in caves.

Please note that this isn't related to chunk borders.

Steps to Reproduce:

• Enter the following seed and coordinates.

• Seed: 5577082629219222156
  Coordinates: /execute in minecraft:overworld run tp @s 313.16 -37.38 -266.76 -127.96 -13.72

• →  Notice how abnormal cuboid shapes can occasionally generate in caves.

Expected Behavior:

The expected behavior would be that abnormal cuboid shapes cannot generate in caves.