Jay, it would be a good idea if you could make the CC staff aware of this. Submit a support ticket and tell them!
This looks to be a Fancybox issue.
It's easy to overlook something you're not looking for.
This is a site I built for my work.(RSD)
http://esmansgreenhouse.com
This is a site I built for use in my job.(HTML Editor)
https://pestlogbook.com
This is my personal site used for testing and as an easy way to share photos.(RLM imported to RSD)
https://ericrohloff.com