I am having the same problem on windows 10 edition. Whenever you put sand in the material reducer, it just breaks it and whenever you try to use one, even if you break and replace it, you can't do anything to it. I found that the best way to work around it is to leave and rejoin the world. when you do the items stuck in the reducer will be put into your inventory and it will be fixed.
I am having the same problem on windows 10 edition. Whenever you put sand in the material reducer, it just breaks it and whenever you try to use one, even if you break and replace it, you can't do anything to it. I found that the best way to work around it is to leave and rejoin the world. when you do the items stuck in the reducer will be put into your inventory and it will be fixed.