When a mob from biome makeover mod is rendered in a spawn egg tooltip, the mob´s ambience start looping in the area where the tooltip is triggered multiple times resulting in my eardrums reporting minecraft for molestation
I don´t know if other mods are affected, but if you want to test it out, the easiest example is the dragonfly tooltip from biome makeover:
https://www.curseforge.com/minecraft/mc-mods/biome-makeover
update: while testing this in a superflat world, dragonfly noises popped out of nowhere (with no dragonfly around), so I disabled the egg render feature, fixing it