Finally! I missed this from when I was trying out Redshift back in the day. no more having to extrude a single side mesh by a tiny amount to get proper refractions on glass.
Blender 5.2 has a new shader feature called "thin wall" which is designed for meshes which have no thickness (or very little).
These can be anything from leaves, paper, tissues and some thin plastics
(images taken from Chritstopher3D's youtube video)