Okay... there's a new taint bug in the action bar if you're playing a Warrior, Rogue or Druid and shapeshifting in combat.
Sorry for the bug, it was introduced by the re-write of the action bar code for the taint problem. I'm trying to figure out what's causing it. I know *where* it is happening, I just don't know *why* it is happening.
I'll have a fix out as soon as I can track it down, but I've got to get some sleep. Be back at it shortly.
What people don't get is that I am, ultimately, an artist at heart. My brush has two colors, 1 and 0, and my canvas is made of silicon.