Spawn Area LODs are sky limit tall black chunks w/ Dimension mod
Using a Mod by enjarai(Mini Tardis)that creates dimensions on the fly, but every time said dimension is created, spawn chunk LODs from Distant Horizons go completely black.

.minecraft/saves/WORLD_NAME/data/DistantHorizons.sqlite.minecraft/saves/WORLD_NAME/DIM-1/data/DistantHorizons.sqlite.minecraft/saves/WORLD_NAME/DIM1/data/DistantHorizons.sqlite.minecraft/saves/WORLD_NAME/DIMENSION_FOLDER/data/DistantHorizons.sqlite.minecraft/Distant_Horizons_server_data/SERVER_NAME/