Mobs can not pathfind through Sculk Veins

When I put Sculk veins and spawn a mob, it will not pathfind through sculk veins.

Steps:

1. Place Sculk Veins in a square

2. Spawn any mob on a Sculk veins

Observed Result:

The mob will have problems and stay still on Sculk Veins.

Expected Result:

The mob will pathfind through Sculk Veins as it should be.