Jira Issue Macro does not link custom URL field immediately

Summary

When using custom URL fields in JIRA, and including them as a column in the JIRA Issue Macro, URLs are simply displayed as text and not as a url.

Steps to Reproduce

1. Integrate and instance of JIra 7.6.1 and Confluence 6.5.2
2. In JIRA, add a custom URL field
3. Create an issue with a URL in this custom field
4. Create a page in Confluence
5. Insert a JIRA Issue Macro
6. Click Display Options
7. Add the custom field as an output column in the macro configuration
8. Save the page

Expected Results

The URL in the URL field is clickable

Actual Results

The URL in the URL field is rendered as plain text

Notes

• The URL field in JIRA itself does provide a clickable link

Solution / Workaround

• Clearing plugin cache could make the links clickable, but not in every case