Rendering bug

When in F5 chunks straight behind you are not visible

What I expected to happen was...:
I could see behind me

What actually happened was...:
Line of chunks dissapeared

Steps to Reproduce:
1. Go to 2nd F5 mode(sometimes works on 1st mode too, see pictures)
2. You will see a straight line of empty chunks behind you.

(Note:this bug might be because of the new rendering system)