Minecraft Snapshot 13w07a, fixes a few small bugs

Nathan Adams has uploaded this week's snapshot and it's a very light one. He said on the blog post, "We’ve spent the last week or two trying to rewrite the lighting engine, and it’s going okay but unfortunately is too slow to put live." This week brings bug fixes for maps in the hotbar, nametags of mobs being positioned incorrectly, and fixes for teams in command blocks. You can get the snapshot at the blog post below, and we can hope next week will bring that new light engine!

Source: Mojang