Basically, was trying to sell a Branch-infused Wolfsboon to Ivris while buying a generic Wolfsboon at the same time - which causes the shop interaction to be like "so you're not really selling/buying anything? Okay." I doubt it's intended so I posted this; probably something to do with the fact it's reading it as the same item despite being infused, even though buying the normal item while selling the infused item treats them as separate entities.