I believe the problem may have to do with the stone slab recipe. When crafting them from a crafting table, the slabs do not work for the grindstone recipe. However, when making a stone slab through a stonecutter, it works just fine.
veist
I believe the problem may have to do with the stone slab recipe. When crafting them from a crafting table, the slabs do not work for the grindstone recipe. However, when making a stone slab through a stonecutter, it works just fine.