Last modified: 2011-01-25 00:40:44 UTC
Emails should be sent in interface language, but they are sent in content language instead. (Confirmed by setting my hu.wikipedia account interface to English, enabling talkpage edit notification and anonymously editing my user page; the email was sent in Hungarian.)
Clarifying: if A uses Special:Emailuser to e-mail B, we want the e-mail to be in B's interface language.
*** This bug has been marked as a duplicate of bug 2592 ***