I can't duplicate this behavior locally and can't think of anything that's dependent on a
< character. I wonder whether you have a filter such as
mod_security that's preventing the POSTed data from getting to OJS. You should be able to use a tool like Firebug for Firefox, or Chrome's built-in developer tools, to inspect AJAX requests; I'd be curious what the response to the AJAX POST is that saves the form.
Public Knowledge Project Team