Bees doesn't add a Honeylevel when leaving the beehive

I discovered this bug while building a automatic honeyfarm. I tested the farm with a beenest and a beehive.
When bees leaving a beenest they every times add a Honeylevel. If I try this with a beehive it doesn't work.
I hope you understand my problem and can solve it.
If you have any questions just ask me.

 

Here is a Youtube Video that shows my Problem: https://youtu.be/ASSQfvnNmqk