mailto link to a Jira Service Management default email account redirects to Site Homepage

Issue Summary

Adding a mailto link on a Confluence page to a Jira Service Management default email account redirects to space overview page instead of opening the local email client and populating the email address.

Steps to Reproduce

1. Edit a Confluence page
2. Insert a link on the page to the JSM default email
   • support@<instance>.atlassian.net
3. Link is converted to mailto:<email_address>
4. Click Open link in a new tab from the link edit menu ** and the local email client is opened, with the email address populated in the To: field
5. Publish the page
6. Click the link and it directs you to the Site Homepage
7. Right click the link and select Open Link in New Tab and the local email client will open and populate the To: field

Expected Results

Clicking the link should open the local email client and populate the To: field.

Actual Results

Clicking the link redirects you to the Site Homepage. It appears it is treating the link as a domain link, rather than a mailto link.

If the mailto link contains a parameter such as "?subject=Hello" or "?body=Hello", when clicked, these parameters will be added to the end of the URL of the page without redirecting the browser elsewhere.

Workaround

1. Right click the link and select Open Link in New Tab and the local email client will open and populate the To: field
2. Right click the link and select Copy Email Address and paste into local email client
3. Unlink the email address, requiring a copy and paste into the local email client

Alternative Workaround:
Add an HTML Macro and add: (replace USER and INSTANCE with actual values)
<a href="mailto:USER@INSTANCE.atlassian.net" title="mailto:USER@INSTANCE.atlassian.net" rel="nofollow">send email to user</a>