

Exploiting the difference in value of a commodity between communities is a valid way to make a living, traders have existed for a very long time, though if there’s little effort required the values will quickly align with each other. Turning it into an infinite money glitch by having a mint convert your raw material into coins is nonsense.
That’s all still assuming the coins are made of pure gold/silver for some reason. And assuming the mint is willing to just make money for you in spite what I’ve already said.
Edit: And that’s all if you ignore the fact alchemy, conjuration, and transfiguration exist in that universe so the entire thing is moot anyway. The angle they should have taken is that physical currency makes no sense in a world where you can just summon more, but I suppose that’s harder to turn into “I’m so much smarter than the entire world”.
There’s plenty of examples of software doing this right and displaying each language in the selector in that language, it’s hard to say why they’ve localised it here. Most likely they just didn’t consider how the user interacts with that element and localised it the same way they translate everything else, but that could be down to anyone from the developer habitually running everything through localisation to company policy where they couldn’t get an exception for that element.
You’d have to ask support for whatever software you’re using for more detail, chances are you won’t get anything useful back but if you’re lucky they might fix it.