Interior Floor/Wall blocks showing through exterior walls in Woodland Mansion

In the Woodland Mansion generated structure, floor and wall blocks for the interior of the building are visible on the exterior wall of the structure.

What I expected to happen was...:
To not be able to see any of the interior birch flooring as part of the outside wall (especially as it appears to be single blocks, and not a band running around the building)

What actually happened was...:
Some blocks from the interior walling and flooring are replacing (or not being overwritten by) some of the exterior of the structure.

Steps to Reproduce:

1. Make a world (with generated structures setting turned on, and where "Roofed Forest" will generate)

2. Find a Woodland Mansion structure (e.g: "/locate" command)

3. Fly around the building - and note, between the second and third floors, that some of the birch flooring is visible from the exterior of the building.

Additional Notes:

• Related to: MC-107637?

  • Closest relative I could find when doing a search for this issue.

• I believe these are the same issue, but I can split the ticket if they're not:

  • May also see some Dark Oak logs poking through the walls (other than the pattern that rings the building)

  • May also see some Cobblestone stairs with incorrect facing that allows visibility into the structure

Examples:

1. Seed: 5596122738704322835

   • Large Biomes generator setting.

   • Birch planks:

     1. 22533, 83, -10983

     2. 22549, 83, -10999

   • Dark Oak Logs:

     1. 22527, 81, -10983

     2. 22551, 81, -10999

   • "Incorrectly Facing" Stairs:

     1. 22559, 80, -11014

     2. 22559, 83, -11014

   • All of these missing slices, and showing pieces appear to be on the southern face of the structure

   • All of the 'incorrectly facing' stairs appear to be against the south-east corner