When Confluence base URL is set to HTTPS, the Roadmap Planner Macro content breaks when exported as PDF or Office file

Description

When Confluence base URL is set to HTTPS, the Roadmap Planner Macro content breaks when exported as PDF or Office file

Steps to reproduce

1. Create a page and insert the Roadmap Planner Macro. Generate content for it.
2. Have SSL configured for Confluence at Connector level
3. Set the base URL to https://confluence-url.fqdn:port-if-needed
4. Go to the page that created in step 1
5. Export the page as PDF or Word

Expected result

Page content fully export with correct content from Roadmap Planner Macro.

Actual result

Page export is broken, not showing image content from the macro.

Workaround

Set the URL to http://localhost:8090/your-context

Additional Info: Customer originally affected by this bug uses Scroll Office Plugin from K15t GmbH to customize the office templates as per their company standards, since default Confluence export content from pages may not have customized formats. They used this plugin during their tests. Is it possible to test any results with this plugin as well? Thank you.