#1 - Jan. 5, 2018, 9:57 a.m.
We recently hotfixed a bug affecting the crafting recipe for Wirt’s Leg. With this change, using the recipe will correctly produce a Legendary (rather than Magic) item which yields a unique material when salvaged. Old versions of the item will salvage into Arcane Dust instead.
If you’ve already given the Wirt’s Leg recipe to Haedrig, it will still appear to be a Magic item in your crafting list, but crafting a new one will yield a Legendary item as intended.
Thanks for your patience while we investigated this issue!