JIRA Issue Macro will not show Epic Link value if the language is not set to English

Summary

The Epic Link value is not displayed in Jira Issue Filter if the language set in the user profile is not English.

Steps to Reproduce

1. Change your language in your profile to Spanish.
2. Check a page where a Jira Issue Filter is displaying Jira issues with Epic Link.

Expected Results

The Epic link value is properly displayed

Actual Results

The Epic link value is empty.

Workaround

Switch back your language to English to have the value displayed again.