Friendly urls, are perfectly in the browser, but copying the link and paste it in the editor of the XF or even in Notepad the format of the url changes when you have special characters
Looking deeper into the generated page source, they have the same error code using special characters.
There's more .. xD ... looking at the pages indexed in google, the links have the same error code.
It would be practical to remove the title pages of the urls, but the difference in the number of return visits and google adsense are great .. then there is the slightest possibility to disable the function ... it only remains to fix it
This is not a browser error, as it happens in IE,Firefox and Chrome..
Test special characters inXF
Now copy Link above and paste to XF Editor
I await a solution