Stock in the left, with filter for furniture, has an anvil in it. The stock in the right has filter for “tools & goods” and have all other workshops and talismans correctly stored there.
At first I got really confused, because checking the ghost files, it has everything right.
But for some reason, its iconic is also setting stockpile filters, and it is setting to furniture.
To fix: just remove it completely from the iconic, let only the filters in the ghost take effect.