Articles not loading when opened via the Widget

Issue Summary

Articles are not loading when opened via the Widget.

Steps to Reproduce

1. Configure a widget by having a public portal and anonymous access to Confluence.
2. Embed the Widget to a webpage.

Expected Results

Customers are able to view articles via the Widget.

Actual Results

After clicking on an article it shows: <instance>.atlassian.net refused to connect.

Articles can be accessed normally via the customer portal without logging in.

Ticket creation works normally.

Workaround

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