Steps to Reproduce:
<Please see attached file for image>
Expected Result: Default Portlet Filter will be saved.
Actual Result: Error 500 - Internal Server Error and you can no longer access the Portlet.
Workaround: Go to the admin side and take out the portlet filter to access the portlet again.
Keywords: CLARITYKB, portlet, filter, special character, default, CLRT-27688, clarity1206resolved.