James, could you reproduce this issue on our Demo? We've checked and everything is working well. See the screenshot.
So, we need more information.
What the Software version you are using?
Make sure that the server requirements are completely met:
http://www.oxwall.org/hosting .
Do you use third-party plugins? Did you try to deactivate all third-party plugins to exclude them?
Did you try to enable FireBug console to see if there is any JS errors?
Did you try to clear the site and browser caches:
http://docs.oxwall.org/plugin-tuts:enable-debug ?
Did you try to test it in different browsers ? Did you make any any code modifications ?