Customer cannot pull Jira (8.0) issue dates events to Team Calendars

Issue Summary

When the user has Confluence that integrates with JIRA 8, the user will not be able to pull Jira Issue Dates events into team calendars. Additionally other bugs have similar findings:
CONFSERVER-58025
CONFSERVER-57960
JRASERVER-68903 - This is likely the root cause of the problem

Steps to Reproduce

1. Install JIRA 8
2. Create Application link with JIRA 8
   1. Select (shared users) to have OAUTH (impersonation)
3. Install Team Calendar
4. Add a JIRA issue date event

Expected Results

The user is able to create the JIRA event, select issue due date and the events would then appear on the calendar on the appropriate date.

Actual Results

The user is able to create the JIRA (8.0.0) Issue Event, but Jira issues with due dates never show up on the calendar. In Jira 7 this works as expected.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available