When selecting an input method users should only be shown languages for which input methods exist. Although the initial list is filtered to show the correct languages, when using search users can select other languages (generating the fake expectation to have an input method enabled for their language).

Steps to reproduce:

1. Go to http://en.wikipedia.org/
2. Click on the cog and open Input method panel.
3. Click on "..." to access the language list.
4. Observe that "Korean" (or "Nederlands") do not appear.
5. Type "Korean" and select the language.
6. Observe that the input language is set to korean with no input methods available.

Version: unspecified
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=50270
https://bugzilla.wikimedia.org/show_bug.cgi?id=53695