Anonymous users should be able to pick their language on wikidata.org. Since this also controls the language the user views and edits content in, this is an essential part of wikidata's functionality.
As discussed in bug 41451, this is not trivial to implement because of the way the web caches (squids) work. A solution is proposed in bug 42159, but since this also requires configuration changes (for the wiki, and possibly also for squids), this here ticket was created to track the issue.
Version: unspecified
Severity: major
Whiteboard: UniversalLanguageSelector-fixed
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=41451
https://bugzilla.wikimedia.org/show_bug.cgi?id=42159
https://bugzilla.wikimedia.org/show_bug.cgi?id=56464