Living Entity ignores ALL spawning conditions (including biomes)

Hi all, I'm currently trying to make a firefly mob that spawns at night in certain biomes, only on the surface. My entity works fine, but the problem is that it spawns in every biome, day or night, and in caves. I've tried changing its mob spawning type to monster, creature, ambient, misc, but nothing seems to change. At first I thought it was just my custom spawning conditions not working, but the fact that it's spawning in all biomes despite that being built into MCreator is baffling me. Here's my custom conditions as well, any help would be appreciated.