Lava Texture is Incorrect

The lava texture appears to be rendering incorrectly in 13w02a. Observed in both the default texture pack and a custom one with no lava texture.

Steps to reproduce:
1. Observe lava in 1.4.7. Take a screenshot.
2. Install Snapshot
3. Observe lava in 13w02a.

I realize this could be an intention change to lava, but since there was just a change to the texture pack system I thought it prudent to report it.