This is NOTa bug. You can craft logs into barks because you can't find them in the world. However, you can't craft that because you can find logs in the world and craft barks with them.
Eventhough you can turn wood into stripped wood by using an axe on it, crafting stripped logs into stripped wood would be more convenient in large numbers.
Just like how you can craft logs into wood, this should also be the case for the stripped variant. Currently you have to place wood first to be able to get the stripped wood. This is not convenient.
MC-131552
Confirmed for MC 1.13-pre2.
This is NOTa bug. You can craft logs into barks because you can't find them in the world. However, you can't craft that because you can find logs in the world and craft barks with them.
Reply if you don't understand, please. 😛