Ultimate Facebook auto-post and ASCII characters

We are having a problem with the Facebook auto-post, we have enabled it to post every new topic created in the forum to our FB page and it works very well.

However, if the user uses a non-standard ASCII character (i.e. and apostrophe, comma or ampersand) then it posts to the page with the title being the ASCII code for that character (see attached).

Any help appreciated,
Cheers,
Myles