When placing any enchanted items into Player Shops (including Enchanted Books and Enchanted weapons of any type) this seems to break the hover icon above the Player Shop. All items listed in the shop no longer display unless the shop is clicked on directly. This makes it appear as though the shop has not been configured and is not yet selling any items.

EDIT: This was seen in 0.3.3 in 1.21.1 Fabric 0.16.14