Externally embedded content does not load on pages in the author
environment or on secure published pages.
The UBCMS author environment and Shibboleth-protected published
pages are loaded securely with SSL (the URL in the address bar will
start with “https”). Modern browsers are becoming more
strict about showing only securely-loaded content when the URL in
the address bar is a secure URL. For security reasons, attempts to
load insecure content using an External Embed component within the
UBCMS interface will be blocked by many browsers.