I've encountered a bug that I know exists since 2016 or more.

A few mobs spawn in the world.

A little amount, being specific.

They've broken AI, far more different from the one implemented in the JAVA version and, at night, I don't see too many mobs walking around my world.

Mob farms don't work efficiently.

Mob spawners work slowly.

If I write the /kill entities command, it scan for all over the World trying and killing every single entity.

Mobs don't despawn even if you are thousands of blocks away from them and all the chunks are always loaded.