When surrounded by other blocks, top Slabs (any block type) are much darker than they should be.
I expected the blocks to be lit normally, but what actually happened was they were much darker.
Steps to Reproduce:
1. Place any Slab on the upper part of the block.
2. Surround with other blocks.
Duplicate of MC-50263 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.