Hi Sean,
Thank you for reaching out to us about the issue you're experiencing with the Hybrid Blazor app.
The sample in GitHub created using the Microsoft.MobileBlazorBindings NuGet package, which was published in 2020. We have attempted to build a Hybrid App in Microsoft repo using the this NuGet package, but encountered compilation issues.
We suggest that you use the latest source of MobileBlazorBindings instead of the NuGet package to experiment with mobile Blazor bindings. You can find the source code on GitHub at https://github.com/dotnet/MobileBlazorBindings/tree/main
We want to assure you that our components will work as expected in Mobile Blazor Bindings since Blazor components will get loaded only in WebView. If you continue to face any issues, please do not hesitate to reach out to us.
Additionally, if you are looking to develop a MAUI app using Blazor, we recommend checking out the MAUI Blazor App as well.
https://blazor.syncfusion.com/documentation/getting-started/maui-blazor-app
Best Regards,
Bharat Ram H