You can see through chests with exp orbs

I can see through chests with exp orbs. 

What I expected to happen was...:
I should just see the orbs, and not be able to see through chests. 

What actually happened was...:
I was able to see the blocks I placed underneath the chest. 

Steps to Reproduce:
1. Garner a large amount of exp orbs
2. stand on top of a chest
3. look down to see the blocks underneath the chest