Dried Ghast and surrounding blocks generate floating in mid-air

Summary:
Dried Ghast blocks and the surrounding blocks are generating floating in mid-air without any block support.

Steps to reproduce:
1. Generate a new world or load an existing one.
2. Locate a Nether Fossil structure in the Soul Sand Valley.
3. Observe the generation position of the Dried Ghast block and surrounding fossil blocks.

Expected results:
Dried Ghast and fossil blocks should generate normally attached to the ground, not floating in the air.

Actual results:
The Dried Ghast block and some surrounding blocks are floating in mid-air.

(Note: This report was translated by AI, so there may be slight inaccuracies. Thank you for your understanding.)