try to slap the blade again at the anvil and it will do it again atleast that was what happend in my smithy.
Didn't work :(
hmm then I don't know it anymore :( let's hope the developer solves it. I believe he will!
This also happened to me, Use a new blade or a new grip, one of the two is broken/glitched. I recommend using a new grip since it is a lot cheaper. Hopefully this helps