Filing this issue to investigate support for nullability across the stack. We did some work to enable nullability in public APIs in MVC/Blazor but there are still some scenarios we know need work, including:

• Update ASP.NET Core to use C# 8's nullable reference types #5680
• Templates aren't C# 8.0 nullability compliant by default #10921
• Field used in blazor component shown as "value assigned but never used" #20137
• Nullable annotations support #27389
• https://github.com/dotnet/aspnetcore/issues/24791