Search #piglin_loved in your Creative Inventory then get a Piglin (can be both baby and adult). After that throw an item and they just snort jealously and don't admire items. You can still barter with them but you can't throw the items in to the ground and make it so that they pick it up and wear it(like armor) meaning now you temporarily can't get the "Oh Shiny" advancement. Bug needs to be fixed ASAP