Issue Summary

When the Custom Domain feature is configured, Confluence pages embedded from other Confluence sites become inaccessible.

Steps to Reproduce

1. Insert a link to another Confluence page from a different Confluence site.
2. Configure it to be displayed as an embedded page.
3. You should verify that the embedded page is displayed correctly.
4. Configure the Custom Domain feature.
5. Navigate to the page referenced in Step 1.

Expected Results

It is anticipated that the page will display embedded Confluence pages as it previously did.

Actual Results

Embedded Confluence pages are not being displayed, and the following error message is presented:

<YOUR_SITE>.atlassian.net refused to connect. 

Workaround

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