Is Prototyping via the Web Broken?

Thanks. I created a brand new file with a simple test and am still seeing the issue

See Video: https://stephen-razberi.tinytake.com/msc/NjYxODEzNF8xOTE1NzYyMw

And am using this link: https://lun-us.icons8.com/p/LLHLEq2jlkSty9vR2ew6Vg/Z64a1qRoJE2HuqME_xJqYw/index.html