Two endpoints are handling the request when use DynamicRouteValueTransformer

[sefacan]

Describe the bug

Two endpoints are handling the request when use DynamicRouteValueTransformer
When I try to go "/contact-us" page, "ContactUs" action is invoking and PageRouteTransformer is handling the request.

By the way, All trasformers are handling static files. I'm using the ContentTypeFileProvider for skip handling but it has a big freaking dictionary for mime-types. It's not suitable for performance.

To Reproduce

// contact us
endpoints.MapControllerRoute("ContactUs",
    "contact-us",
    new { controller = "Page", action = "ContactUs" });

// pages
endpoints.MapControllerRoute("Page",
    "{sename}",
    new { controller = "Page", action = "Detail" });

// for dynamic pages
endpoints.MapDynamicControllerRoute<PageRouteTransformer>("{sename}");

Further technical details

.NET SDK (reflecting any global.json):
Version: 5.0.101
Commit: d05174dc5a

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19042
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\5.0.101\

Host (useful for support):
Version: 5.0.1
Commit: b02e13abab

.NET SDKs installed:
2.2.207 [C:\Program Files\dotnet\sdk]
3.1.201 [C:\Program Files\dotnet\sdk]
3.1.402 [C:\Program Files\dotnet\sdk]
3.1.404 [C:\Program Files\dotnet\sdk]
5.0.101 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.10 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.10 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 3.1.10 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Microsoft Visual Studio Community 2019 Version 16.8.3

Thanks for contacting us.
We're moving this issue to the Next sprint planning milestone for future evaluation / consideration. We will evaluate the request when we are planning the work for the next milestone. To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.

[pranavkm]

FYI @javiercn

[omfgicbf]

Is this the same as #21083?

In #21083 it seems to have been an issue in 3.1 that was addressed as part of #25073, so it's not clear if:

• It was fixed and should work now but doesn't,
• It's just not expected to work yet and is being considered for a future release, or
• This is a different issue