I had the same problem with the totem and the mosaic. You have to let i…

I had the same problem with the totem and the mosaic. You have to let it fall, from a little distance above the center. It lands with a thud, then the piece appears.

Also, I let it fall again, before my villager reached the gong with the last piece and I got the piece again, but nobody can touch it or pick it up.