Animals are still spawning after using /mvm set animals false. I'm using a normal world with default generation.
I've tested this (and can reproduce) in a Spigot server with default config and only MV-Core installed, also with default config. It also happens in a Paper server.

I got a similar problem, there are no mobs or animals spawning after a restart and I have to run /mvm set animals true, else they won't spawn. In the config everything is set to true

I believe this is a duplicate of #2318, closing as such.