Mine is slightly different - my progress on all the four wings is the same, 100% with Mage, Shaman, and Hunter, and Lesser Heal & Shadow for Priest; which I think was my exact progress on Chapter 1 before the patch. It looks like that got copied over to all the chapters, and led to me losing some progress (e.g. I had finished Chapter 4 with Warrior at almost 100%, but now have nothing there) while gaining other.