trying to use atmospheric with blooming biosphere, both in the datapack version and mod version causes the game to crash at world creation, here's the latest.log

using feature recycler seems to make the crashing stop.

Feature Order Cycle is an issue thrown by Vanilla, when mods incorrectly add their features to biomes. You can use the Cyanide mod to find the more specific mod at fault - or yes it seems Feature Recycler addresses the issue.