Issue collector not loading/appear when user has no access to JIRA but has Confluence Access

Summary

Issue collector not loading/appear when user has no access to JIRA but has Confluence (as example) Access.

Environment

Instance must have JIRA and CONFLUENCE installed and an issue collector being used. (Tests were made in cloud environment)
Also, this HTML embedded code bed can be used for testing http://www.csgnetwork.com/htmlcodetest.html

Steps to Reproduce

1. Create an issue collector
2. Assign a proper default reporter
3. Create a user limited to access confluence only (must not be allowed to access JIRA and)
4. Log in to JIRA as that user (either logging out and entering that user credentials or using the log "in as user" feature)
5. Paste the Issue Collector html code in the test site i.e: http://www.csgnetwork.com/htmlcodetest.html and test it.

   Expected Results

Should be able to open an issue normally using the collector.

Actual Results

When using the "log in as user" feature, it shows the issue collector tab, but won't load (stuck on loading wheel). When entering user credentials in confluence, then trying to test the issue collector, the collector tab won't show.

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Notes

Took a deep check and couldn't find any related bug.

Workaround

Log out from Atlassian applications before using it, or use access with incognito mode.