@alwiggins Thanks for posting here. Please remove or update your review when this is done.
Yes, what you see is how WordPress behaves. Even on a regular site, our plugin can apply unfiltered_html to a user role but then has absolutely no control over how that is implemented elsewhere in WordPress.
In your case, it appears that you have a multisite setup and in that case, WordPress has additional restrictions that our plugin can not override.
Please read this guide: https://publishpress.com/blog/capabilities/unfiltered-html-multisite-networks/. On WordPress multisite networks, only Super Admins have the unfiltered_html permission. You need to make those code changes.
If needed, this is a guide to unfiltered_html in general: https://publishpress.com/knowledge-base/unfiltered_html/
@alwiggins, I’m following up on this, please. Did the explanation above help you to resolve the issue?
I did not receive notice of your last response. No. I have not resolved my issue. My site admins can add html but if that html includes <script> </script> included in embed code it will be stripped out unlsess added by the super admin. that would be ok if the page was never edited again, but even a minor edit and update will cause the script to be stripped. I have also just learned that site admins do not see Additional CSS in the Customizer. only the Super Admin.