Multiplayer LAN Bed bug

I was on minecraft with my brother he tested it to I placed a bed slept in it did /spawnpoint and destroyed it died then brought me back to world spawn witch my spawn was far away from it.

What I expected to happen was...:
Spawn where spawnpoint was

What actually happened was...:
I died then it brought me back to world spawn witch my spawn witch was was far away from it

Steps to Reproduce:
1. slept in bed
2. did /spawnpoint
3. destroy bed
4. you get killed
4. end up in world spawn