I don't know if that happens to anyone but it happens to me. Basically, I did the Papulatus Prequest and i remembered i handed in the quest but it did not give me a Piece and i assumed i didnt complete it. So when i decided to bring my bishop to Papulatus to accept the Piece it doesn't appear in my inventory nor the the quest could be completed because of a dissapearing Piece in my inventory and the quest said i have one in my incventory. P.S sorry for having music on because i was streaming it