This is a bulk resolve of issues that haven't been updated to 0.16.0+ yet. Please comment below (To open the ticket) and update your affected versions. If you cannot reproduce the bug, please write in the comments so we can resolve it as "Cannot Reproduce". Thank You!
I don't think dirt and coase dirt are supposed to be able to be snowy like grass. This is not the case on java. So dirt and coase dirt are probably intended.
Podzol does not have two states for normal/snowy in terrain_texture.json so that has never been a thing on bedrock, but Mycelium DOES. But it's just not working.
not bug look http://minecraft.gamepedia.com/Podzol#Block_state