gtk+-1.2 apps don't have cyrillic characters in ru_RU.UTF-8. I'll attach a screenshot.
Created attachment 90535 [details] Screenshot if first start of evolution in ru_RU.UTF-8
The same goes for ja_JP.UTF-8 afaict.
*** This bug has been marked as a duplicate of 84593 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.