Expected Behavior

Spawn are supposed to be vanilla like, grass and some minimum space.

Actual Behavior

Spawn in any solid block and small surfaces, line of blocks and mob farm that does not spawn spiders or enderman.

Steps to Reproduce

regular version of the mod (1.7.3) and the beta version (the split one) in my skyblock modpack, on cobble and dirt lines and in my mob spawner in netherex bricks.

Version of Minecraft, version of Animania, Single Player or Server

minecraft 1.12.2
animania latest release and latest beta
modded single player skyblock

list of all the other mods in my pack:
other mods.txt

my void biome from OTG:
void txt.txt

my otg world config:
world config txt.txt

Screenshots encouraged

Thank you

I'm able to confirm this. I'm gonna start removing mods (except OTG) until I figure out what is the problem

Alright, can now confirm that this even occurs without any mods other than animania. Will investigate more.

This seems to no longer occur on the latest test build, so I'm marking this as fixed.

Yes Totally fixed, Great job! ( and so quick :O )
Thank you!

Gonna keep this open until I publicly release it