Sculk vein replaces blocks in mineshaft

Summary:
Sculk vein replaces blocks in mineshaft. Because of this, most often the supports in the mineshaft floating.
Seed and coordinates for 1.20:

-732078047
347.09 -29.68 -2749.70

-732078047
366.89 -20.98 -2737.99

Steps to reproduce:

1. Create a world with the specified seed.
2. Visit the specified coordinates.

Observed results:
Sculk vein replaces blocks in mineshaft.

Expected results:
Sculk vein will not replace blocks in a mineshaft.

Image: