Currently, placing transparent/translucent looking blocks next to each other shows 'inside' faces, unlike the blocks themselves.

While I am going to add this, it won't actually help as much as expected. For example, the code in BlockGlass for this method specifically checks if the block is a glass block or a stained glass block. A custom check would be required for every block which uses this state. I will take care of the vanilla edge cases myself, however if other mods do these checks, that will be on them.

This was closed in 17ae794