Language option contains unavailable languages

[Huy-Ngo]

In the language option, there are languages in which the wiki content is empty (e.g. Hungarian/Magyar, Turkish/Türkçe), or not found (e.g. Vietnamese/Tiếng Việt, Finnish/Suomi). I can understand that the empty pages can be left there in case someone can contribute, but why are Vietnamese and Finnish sites, which aren't even created yet, are listed there? Is this a bug?

If they're listed, I'd expect a creation page to show up here. In addition, the languages listed seem to be inconsistent among the pages for different languages.

[guoyunhe]

I remember they were once existing but died at some point. Need to configure the wiki to disable those languages...