Well, it works. I mean, you put the recipe in, and you get your result after a bit (like if you combined a crafting table with a furnace), but the progress arrow doesn't sync with the actual progress. It just freezes to the progress it was at when you opened the gui. Same as the Fuel level bar.
Like I said, I got the progress arrow and such to work with 1.4.7, but can't seem to get it to work with 1.5.1. It's really frustrating me to be honest...