DH Generated Chunks above Terrain in Server Pregen

After using /dh pregen, the pictured black chunks have appeared above the terrain near spawn. I have tried deleting my client server info .sqlite, changing/disabling shaders, etc. I have also attempted building/breaking blocks in the chunk to force an update but no luck. Potential conflicts may come from terratonic or Immersive Portals.

MC: 1.21.1
Neoforge: 21.1.185
DH: 2.3.2