well wenn i try to use your mod (regardless if latest or previous version) together with Concurrent Chunk Management Engine new and preexisting worlds are not loadable. it is stuck infinte at 100 % but never actually enters the world.
i am on neoforge 1.21.1

That's probably a mixin conflict with how the mod fixes old blockstates to the newer blockstate properties.

Please provide a game output log and I will re-open the issue if needed.