Issue Summary

A URL to the unknown attachment place-holder utilizes http instead of https when base URL is set to https, and tomcat server.xml scheme is set to https.

Steps to Reproduce

1. Create a page and add an attachment to it.
2. Open Attachments page from the view page and remove the attachment file
3. Open the view page and inspect the unknown attachment placeholder

Expected Results

It uses https

Actual Results

It uses http

Workaround

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

Related tickets

A similar issue: https://jira.atlassian.com/browse/CONFSERVER-57934

Original report: https://jira.atlassian.com/browse/CONFSERVER-55928?focusedCommentId=2494754&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-2494754