Bees Spawning in large numbers.

(this is a clone of the same issue I posted. I had to re-post because I entered the wrong Minecraft version) My friends and I have a creative world that is our "main world" and a few months ago after the Buzzy Bees update we got "invaded" by a large group of bees. (there were more than 100) and after killing all of them we thought they were gone but every couple days there are hordes of bees all over our city. mob spawning is off and the world is on peaceful. there was also one incident where there was a ton of rabbits in a building. but that was the only occurrence of a large group of rabbits. we don't want to use the /kill @e command as that would get rid of all the armor stands, item frames etc. i'm not sure if it's a bug or not because I haven't heard of anything else like this. A comment from one of the helpers (on my previous post) was "It sounds like one of you friends, or possibly a random person from the internet, is entering the world and spawning a bunch of mobs to harass you. You might want to check your multiplayer settings." The world isn't a realm so no random people can join. its an invite only world, they are really close friends and they, swore they didn't spawn any bees in also the amount of bees that spawn is not possible to spawn in such a short time between each incident.