FS-UAE and FS-UAE Launcher can be translated to other languages (than the default English), and the translations are included with every FS-UAE download. You can follow this link in order to view or edit translations:
https://crowdin.com/project/fs-uae.
If you want to create and maintain a translation for a another language, please contact me by e-mail or post a message to on this forum thread.
fs-uae-launcher has a bug – i have my operating system in english, and it is shown in portuguese – i’m using ubuntu 19.10 amd64, fs-uae-launcher is installed and updated from ubuntu repository
That’s weird… what’s the output of running
env | grep -E '(LC_|LANG)'in a terminal?