Windows 10 x64
Branch: blender 2.8 (Beta)
Branch: blender 2.79 (Official Release)
Short description of error
Can't weight paint through the mesh. In 2.79 you could deselect "Occlude Geometry" and paint "through" the mesh. This was nice when creating trees and you wanted to weight paint all sides of limbs at once. In 2.8 Occlude Geometry got merged(I think) with another setting. Selecting/deselecting Show Xray doesn't act the same way.