Bees can sit down in space below y = 0 as if they were on the ground.

Bees can fly beneath y = 0 and sit down in the void looking as if they were sitting on the ground.

Although this bug is not very harmful in the normal world, it can be a serious problem in a void, buffet "floating islands"  or similar type of world.

I think it should be impossible for a bee to fly beneath y = 0;