Suggested fix (unconfirmed): Search near the fence line to the right to find the missing leg. Collect any other remaining body parts and add them to the tuning fork.
The problem
Accidentally put the body parts on the tuning fork before starting that quest, and it is stuck on the quest to make it ugly.
Suggested fix (unconfirmed): Die, then sleep in a bed to reset the items near the totem. If a part is stuck behind a fence, search carefully for hidden or invisible limbs and make sure you have attached 2 heads, 1 body, 4 arms, and 4 legs in total.
Suggested fix (unconfirmed): Find the missing pieces near the fence by the stairs and on the chest above the puzzle platform. Check behind the shrine to the right for the leg leaning against the fence.
Day One Fixes