Well, it's hard to use glass anymore as you can see the layers of glass inside the glass, If i build a two by two window i can see all the layers, and it kills me.(It's not as bad as the picture but it is just to give you an idea)

Put the summary of the bug you're having here

What I expected to happen was...:
See through glass without seeing layers

What actually happened was...:
I saw layer of glass while looking in glass, it kills me.

Steps to Reproduce:
1. Play mine craft
2. Create world
3. ... Place block