Languages not showing up

I noticed Portuguese was not in the available languages, while Esperanto was. It surprised me a lot, so I clicked on the Contribute button, hoping I could help translate the game. When it took me to Weblate, I saw that PT-BR was already 100% complete, and PT-PT sitting at 82%. Why don't they show up in-game, then, while others that are less translated do? Along with these two, other languages that are available at Weblate but not incorporated in-game: Arabic, Dutch, Indonesian, Danish, Punjabi, Serbian, Vietnamese.