Put the summary of the bug you're having here
What I expected to happen was...:
The chest to stay visible
What actually happened was...:
When xp orbs are over a chest the chest becomes invisible.
Steps to Reproduce:
Use an xp farm or xp bottles and have the orbs cover a chest while going into the player and the chest wont be visible.
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
Duplicate of MC-168485 - please search in the future