When there are problems with the support of MediaWiki for your language, we really want to know about this. It is best  to report each issue separately. In this way there will be no large mass of issues to resolve but we can address each issue on its own. Consider issues with the display of characters, the presentation of your script, the position of the side bar, the combination of text with other languages, scripts. It is best to try this in an environment like the prototype wiki as it provides you with a clean, basic and up to date environment. The prototype wiki is available for five languages but you can select any of  them, change the preferences to your language and test out MediaWiki for your language.