razor [WebToolsE2E][Aspire] After adding any component, an error occurs "The type or namespace name 'App' could not be found".

REGRESSION INFO: Repro on Aspire 8.0.0 preview 3

INSTALL STEPS

Clean machine: Win11 x64 23h2 ENU
Install VS Code[1.86.2]
Install C# Dev Kit[1.3.10]
Install SDK 8.0.202
Install Aspire.ProjectTemplates.8.0.0-preview.4.24122.7
Apply NuGet Feeds

REPRO STEPS

Open VS Code, Create a new .NET Aspire Application
- 'Ctrl-Shift-P' > .NET: New Project > .NET Aspire Application
- Create new folder "aspire" under the home folder (C:\Users<user-name>) and select that folder as the solution folder
- Name the new project
'Ctrl-Shift-P' to add a new Blazor Web App project under this solution > give a name 'BlazorApp1'
Right-click the xxx.AppHost > Add project reference to BlazorApp1
Open Program.cs under xxx.AppHost, add following code 'builder.AddProject<Projects.BlazorApp1>("BlazorApp1");'
Right-click the xxx.Web project > Open in Integrated Terminal > add aspire component
- dotnet add package Aspire.Azure.Storage.Queues --version 8.0.0-preview.4.24122.7
Build and open Program.cs under BlazorApp1

ACTUAL An error occurs "The type or namespace name 'App' could not be found"

EXPECTED There won't be any errors.

Feb 23 '24 06:02 v-reinawang

Doesn't look aspire related.

Feb 23 '24 06:02 davidfowl

Transferring to dotnet/aspnetcore, since this is Blazor related.

Feb 23 '24 20:02 eerhardt

Is this just an error that shows up in the editor? Or does this prevent you from running the project? Either way, we think this is probably a razor-compiler issue.