Unsure if this is an error or the lack of a certain design specification, but no matter what block is framed they all produce a wooden sound -- be they stone, glass, wood. This is nonsensical when you're walking up "glass" steps. and all you hear is wood.

Up to you whether you think frame blocks mimicing the sound of the material they're framed with would make sense. If I tiled a stair framework with slate tiles, they'd sound like stone when being walked on IRL. I certainly believe that it would be a nice QoL improvement.

Thats a good point, I will change them to mimic the material they have been framed with (if that is at all possible)