Originally reported by Patrick at https://commons.wikimedia.org/w/index.php?title=Template_talk:Translate&oldid=111841370
We use english as the default language for svgs. If an svg file has a language <switch>, and a fallback language, we currently do not allow the fallback to be selected from the drop-down menu. We should probably detect this situation and handle it somehow. Not exactly sure what the best thing to do in this situation would be.
Example file: https://commons.wikimedia.org/wiki/File:SystemLanguage.svg - There's no option in the language drop down menu that would trigger the output of https://commons.wikimedia.org/wiki/File:SystemLanguage.svg?lang=x-none even though the output is different from all the choices.
--------------------------
**Version**: 1.23.0
**Severity**: normal