TNT render blocks invisible

When you explode some TNT, netherrack become invisible.
How to reproduce
1. Go to the nether
2. Explode at least 30 TNT
3. Observe

EDIT 1 : This seems to happen in all dimensions.
You can observe the glitch in GameChap's video at 1:40 http://www.youtube.com/watch?v=Mb5gnMpPsno