Team Calendar doesn't display Oauth prompt for JIRA Events

Summary

Team Calendar doesn't display Oauth prompt for JIRA Events

Steps to reproduce

1. Install Confluence Team Calendars;
2. Create an Application Link between Confluence and JIRA;
3. Create a Calendar;
4. Click Add Event and try to select a JIRA EVENT TYPE;

Expected behavior

It shows "Login & Approve" message

Actual behavior

Calendars are loaded with errors.

Workaround

1. Insert a JIRA Issues macro into a page;
2. => it shows "Login & Approve" message;
3. Authenticate;
4. Back in the calendar, the JIRA Events work properly.