I renamed a cyan bed to bed and when I placed it & broke it was called cyan bed again. That's pretty much how you can REPRODUCE it.
This is TRUE for ANY bed not just cyan. The name just gets reset back to original.
This is also TRUE for
Boats
Armor Stands
Tried on the latest 1.12.1 Minecraft W10 PC.
Thank you for your report!
We're tracking this issue under MCPE-25845 so I've requested this report be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki