visual error /non-mechanical lighting glitch

Put the summary of the bug you're having here

*What I expected to happen was...: see a chest
Describe what you thought should happen here

*What actually happened was...:i see glowstone where I knew a chest was with glowstone beside it and I could open a Chest
Describe what happened here

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...