Clouds through stained glass

Put the summary of the bug you're having here

What I expected to happen was...:
That I could watch through the stained glass and see the clouds.

What actually happened was...:
The clouds overlapped the stained glass

Steps to Reproduce:
Go higher then the clouds. place stained glass and watch through the stained glass to the clouds.

http://i.imgur.com/h9fgW57.png