[MC-216960] Dirt square near mineshaft

I found two weird squares that are filled with air and one layer of dirt close to mineshafts. One was above y=0 and the other one below. It seems as though the tunnels lead into these "rooms" and they generate according to the biome above.

Environment

The seed is: 6920284681567255947
Java version 8 update 271 (build 1.8.0_271-b09)

Linked issues

duplicates 1

MC-215876 Dirt can generate below y=0 from mineshafts Resolved

Attachments

Comments 2

mxblue28 2021-02-25T11:12:04Z

Intended. These rooms have always been part of mineshafts.

Avoma 2021-02-25T11:14:57Z

This feature isn't actually a bug, and, "Works As Intended" due to the resolution of MC-215876. What you're seeing is the dirt patch within the mineshaft, therefore this ticket duplicates MC-215876.