Having blueprint installed prevents BYG (or any other mod that uses terrablender that i tested) from spawning any of its biomes, I was testing it on the latest 1.18 version of blueprint terrablender byg and forge.

To add to this, it's specific to terrablender 126.

Think it's the same as #166 but for a lower version, I assume the fix wasn't backported

To add to this, it's specific to terrablender 126.

Think it's the same as #166 but for a lower version, I assume the fix wasn't backported

Correct, a backport of the fix will be coming soon.