Smooth (red) sandstone has the wrong blast resistance and hardness

Smooth Sandstone and Red Sandstone do not have the same blast resistance and hardness as sandstone. They actually (most likely unintentionally) share the same hardness and blast resistance with regular stone, and not sandstone. This wouldn't be a hard thing to fix either, but it seems to be a bug, as smooth stone and normal stone share the same hardness and blast resistance, therefore it seems that sandstone should as well,