Seeing this thread. It should be noted that these leaves will turn into normal leaves with 1.13. Similarly, any other invalid item like this will no longer look like this in 1.13 The stone-wooden slabs will turn into the petrified wood. So those still have value.
Long story short. Look like wood planks. But they act like stone. In that they do not burn. It is leftover from an old item in minecraft. afaik, vanilla minecraft does not introduce a way to obtain.
So the glitch texture is finally going to go... I'll miss it. I'm glad stone wooden slabs are staying, though!
It's weird that they're turning that old glitchy block into a new thing now. Is it going to be obtainable again?
