The friendly URL's of the Wiki cannot handle a questionmark in the title of the Wiki page.
1) add a new wiki page with title 'test?' using default language
2) change language
3) goto all pages and select the newly created page (so the page exists)
Behaviour: error notification that page does not exist, The page seems to refer to 'test' instead of 'test?'
Expected: possibility to start adding content to 'test?'