This is a common thing in software too I fear. I have Firefox on macOS. Everything is configured for US English, but I live in France. When I tell Firefox to sa

This is a common thing in software too I fear. I have Firefox on macOS. Everything is configured for US English, but I live in France. When I tell Firefox to save a page (or download something), the dialog prompts me to "Enregistrer sous..." (i.e.: "Save As..."). No idea why this happens.