Piglins have an "Open" option
When I was exploring the nether now in 1.16, I was
amazed looking at the new biomes and mobs. I quickly came across a piglin and approached it with my gold helmet on. I saw that it said "Open" at first I thought it was a feature so you could choose what they give you for gold but I quickly noticed that that was not the case because as soon as I put a gold ingot in my hand, it gave me the option to bartender with it. Not a big issue at all, just a minor inconvenience. (The open button doesn't work on them so don't worry about that.) This doesn't affect zombified piglins.