[Blazor] Register/Login forms no longer work in Blazor Web App template

[MackinnonBuck]

Overview

Submitting the Register and Login forms in the Blazor Web App template appears to do nothing on the latest changes from main:

repro.mp4

None of the form handlers get executed.

Removing the following line in Program.cs fixes the problem:

aspnetcore/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Program.cs

Line 99 in 71df2cc

app.UseStatusCodePagesWithReExecute("/not-found", createScopeForErrors: true);

This might indicate that #62067 caused the regression.

Steps to reproduce

Clone the dotnet/aspnetcore repo at commit 71df2cc (latest at the time of writing) or earlier and follow the steps for running the templates locally. Create the test project by running .\Run-BlazorWeb-Locally.ps1 -Auth Individual from the src/ProjectTemplates/scripts folder.

[javiercn]

@MackinnonBuck I think @ilonatommy fixed this recently.

@ilonatommy can you take a look?

[ilonatommy]

@MackinnonBuck I think @ilonatommy fixed this recently.

I don't think it's the same problem I've been fixing lately. I will take a look.

[ilonatommy]

We're not recognizing POST requests as POST when IStatusCodePagesFeature is set on them:

aspnetcore/src/Components/Endpoints/src/RazorComponentEndpointInvoker.cs

Line 182 in 6a96694

context.Features.Get<IStatusCodePagesFeature>() == null;

Working on a fix.