I placed 1 in the northpole and it turned into pig. I had 11 more and went to Bob the fixer and they won't be fixed. Screenshot: https://drive.google.com/open?id=1CuM5MuZf1Zwgi7t56hWnQ9zlv7oAYySp (Edit was said 11 now, had 3 earlier now 11 that is broken)
I've added the recipe to bob, Try to fix them now. If they won't fix keep the spawners in your inventory and I will fix them for you.