Special Characters appears as ? on the Customer Portal Main Page

Summary

When changing the request types description to something that uses special characters like:

• Solicitações
• Periféricos
• Permissões

The Customer Portal will render it as "?" or "�".

Steps to Reproduce

1. Ensure your JIRA Server install is running Jira Service Desk 4.0.0 or later
2. Change the Request Types description to something like: Você, Periféricos, etc.
3. Try accessing the customer portal URL as http://JIRA_URL/servicedesk/customer/portal/1
4. Verify that the Request Types descriptions are displaying Voc?, Perif?ricos

Expected Results

The Request Types text and some portal texts should render without error.

Actual Results

The Request Types text and some portal texts render it as "?" or "�".

Notes

If you click on any link and go back to the portal page the words renders correctly.

Workaround

None