The culling for transparent stairs and slabs don't seem to check for a matching blockstate. If an upper slab is placed next to a lower slab, the face is still culled, as seen in the workspace & screenshot.
Also, the wall elements seem to have broken when I updated to the new snapshot, the log says it failed to load the code for walls. I had to lock the wall code to fix it, as even recreating a new wall block has this error.
The relevant elements are named GlassSlab, GlassStairs, and StrippedAzureWoodWall.