Hi Scott,
Greetings from Syncfusion.
We have prepared a sample in ASP.NET Core Web Application with Blazor component. We have ensured by saving the output from web browser. The downloaded HTML file contains single chart only. We have attached sample and HTML file for your reference.
Output :
If you are still facing the problem, please try to replicate an issue in above sample or provide us issue reproduced sample, so that it will be helpful for us to proceed further and provide you the solution sooner.
Regards,
Durga G