The bug
Beds without a solid block below do not appear on maps.
How to reproduce
Place some beds on solid blocks
Create a map
Remove the blocks below the beds
Linked issues
duplicates 1
Attachments
Comments 3
You are right, it is not caused by non-player placed beds. Instead it happens when a bed has no solid blocks below.
Could you please reopen the report and remove the attached screenshots?
That is MC-76920
Cannot reproduce. See the two screenshots I attached.