When sleeping in a bed in a 4x5x2 room, you get glitched above the bed, causing you to see through the roof, similar to an x-ray machine. Image below.
MC-50115
Sleeping Bed Issue
Resolved
Duplicate
0
The room dimensions are just what I had used. This may be present in other room sizes as well. The main number to look at is the 2 block tall height. Also, this bug may be present in other snapshots. I have only tested it in 14w08a.