Openfire rejecting Spacing Modifier Letters

Hello I am using fastpath and the webchat.war file. It all works fine but when I use a spacing modifier letter I don’t get a response from openfire.

All the characters listed on this site do not work : http://www.alanwood.net/unicode/spacing_modifier_letters.html

Something in openfire fails. I do not get any error in the openfire logs. If you have fastpath/webchat can you try entering this characters to check if it is not just me. If it does work for you can you tell me your setup

Thanks in advance.