Expected Behavior

Although the mod touches world gen, it is supposed to not affect the way in a way like that.

Actual Behavior

Worlds generated with this mod on are different from the ones without it/vanilla. The terrain itself generates differently, but other observed effects are more floating islands on the nether, smaller end cities, less connected caves, among other things.

Reproduction Steps

1. Create a world in vanilla or without a mod, take note of the seed
2. Create another world with the mod on with the same seed as the previous
3. Compare generation results

Attachments

First on each pair are without Lithium, and the second, with. Seed was 104967040175852735 .

Lithium 0.5.1 has been released and contains the fix for this issue.