Yes, I believe there is something wrong in the configuration of the UTF-8 encoding/charset in the users' browser. HowardStrong's proposal looks fine on both my Internet Explorer and Chrome. Luke-Jr's proposal looks OK in my Internet Explorer, but doesn't look right in Chrome.
Luke-Jr, if you go to Tools/Encoding in your Chrome browser while in Wikipedia, you should have the UTF-8 option checked. Is that so?
Just to be sure, I've gone through ALL character encodings in Chrome. Lukes character is displayed in none.