X-ray glitch when in sand

There is a bug when you suffocate in/go into sand and you x-ray. 

 

Steps to Reproduce:

1. Dig a hole 3-4 blocks under you

2. Get sand ( maybe from creative inventory or /give )

3. Place 2 blocks of sand from the top so they both fall on you and suffocate you (if in survival)

4. Look around, x-ray glitch works...

Pictures: