Bees Vanishing

I grabbed a nest of Bees using my silk touch. Brought them over to a couple empty hives I had and placed them. I started breeding them which seemed to work. Nut they have been slowly disappearing. They do not appear to anger mobs. So it cant be mobs.

I did notice that the fire I placed under them; they seemed to fly into(which is a logic problem in itself) and hurting themselves. So I took out the camp fires. Tried to keep breeding them... but they still disappeared.

• A few things I fear it may be that you need to quick fix:

• They are flying into fires or lava and dying... obviously bees should avoid those blocks.

• They are flying so far away, they are never coming back. Which would be another Logic problem.

• I also noticed they got hurt by berry bushes. Obviously they should be immune to those.

What else could they be getting damaged from? Are they flying into water and drowning? Try to thing of things you have not programed into their logic.

Thank you.