Barrel recipe is inverted

I was just crafting a barrel with crimson slabs and sticks, when i pressed on the recipe it was the opposite way round, instead of the slabs being on the top and bottom middle it was sticks instead, when i crafted it and looked the at recipe without the ingredients it was showing the right formation, but when i tried craft the barrel with crimson slabs on the top and bottom and sticks on the side it would give me the barrel.