Unseen faces of blocks are not being properly culled

[MuteTiefling]

Mod Version: create-1.20.1-0.5.1.f

Unseen faces of blocks are not being properly culled. This will result in a performance impact when many blocks are used.

Below is a view of a wall in spectator mode where we can still see the top/bottom of the Andesite Sheet Metal block. Those sides are covered and so should be culled.

[Magi1053]

Confirming this issue is still present in the latest version 2.0.2-1.20.1-forge.