What mod makes normal bosses spawn when being in their biome in hardmode?

So i recently killed WoF and now pre-hardmode bosses are spawning out of the , during the day multiple king slimes spawn, during the night multiple EoCs, go into the corruption for a minute and you've already got EoW spawning, it's pretty frustrating.

mods list

Calamity
Fargowiltas
Thoriummod