Fixes

• Brick and Blackstone Vertical Slabs can now be crafted in a stonecutter
• Cut Copper Vertical Slabs crafted from copper blocks in a stonecutter now give 8 instead of 2 slabs
• Vertical Slabs are now automatically waterlogged when placed in water
• Water should now flow out of Waterlogged Vertical Slabs when blocks next to them are broken

Known Issues

• Update 1.21 experimental blocks do not have vertical slab variants