XPages Wiki template for Domino 8.5+
Links to internal wiki page with nonascii text are saved without this text as http://sp1serv.assortiment.ru/webbase/wiki.nsf/dx/ External wiki links are OK.
I have the same issue with Cyrillic characters in the URL (for articles) and I changed the wikiFormating.makesubject method. I removed the last .replace that removes everything that is not latin alphabet and digits. I am not that good in regex to be able enabling additional alphabets there too but at least it works.
I have to say that links are not "saved" like this since links are formed dynamically using the wikiFormatter class from xpWikiStyle script library. That's why you see the proper link in edit mode like [[Чего-то там]] but in read mode you get just dx/_ (underscore is for the space).