if you place block above a bed in a 1 wide 2 high tunnel underground and get in he bed it is a xray glitch i did a video on it here https://www.youtube.com/watch?v=Sn-oFLfcxPQ
Environment
windows 7 java lastest verison
MC-78482
Bed Xray Glitch
Resolved
Duplicate
0
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-47646. You can find or add further information on that report.
Please search before reporting any bugs, as it's likely that one exists already.