Idk if you're just setting like the wandering trader name to the image or something and idk if there's a way to fix it, but if I get the name in chat it shows the image. This can be seen using /summon wandering_trader

It's kind of a stupid thing to go way out of your way to fix and it's honestly hillarious. I also know you haven't even gotten to the creative menu yet so it's not a huge problem imo. Just figured I'd let you know, love the pack btw.

Thanks for the kind words, and yes the pack essentially renames a lot of things to images, most of the time this isn't impactful because the names are only present in guis, but for entities, things like the scoreboard and mods like messing with it.

Functionally this allows me to reach past the bounds of the uis and also make custom uis for things like villager professions and chest variants.

It's not really fixable in vanilla, but there is a modded language that works with mods that mitigate these issues, but have some issues of their own currently