Thread:Project:Support desk/1.17, 1.18, 1.19, 1.20, 1.21 Critical bug - lack of translation of page name to suitable encoding - whole site is broken by update scripts (not updated)/reply (7)

MediaWiki never officially supported charset conversions for garbled text. Garbled chars are caused by a configuration problem and MediaWiki only worked correctly with them by chance. But that it did, was no feature. That drupal page looks like a good help.