I dont know maybe bed farm :/

What I expected to happen was...:
So i placed a bed to sleep for the night in my minecraft world and when i would wake up i would destroy the bed to keep exploring

What actually happened was...:
To destroy the bed and get multiple bed , like from 1 bed to 2 beds

Steps to Reproduce:
1. Place the bed in a sand or grass or dirt
2. Then hit the pillow and underneath the pillow hit the block and then hit again the bed and destroy the bed
3. Then you are gonna get 2 bed from 1