Spaces in static files (CSS, JS, images, etc.) not working in MAUI Blazor for Windows

[VolkumDev]

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Description

The problem is almost identical to #8103. I create a project based on the MAUI Blazor Template, i run the app, and what i get is this:

I have already cleaned the solution, deleted the obj/bin folders, i did it on different orders, i rebuild, clean rebuild, etc. Nothing worked.

No errors are showing up on Visual Studio.

I have the latest available Visual Studio Preview version from "Tools and Features" installer.

Steps to Reproduce

1. Create a project with the MAUI Blazor template
2. Build and run the project.

Version with bug

6.0.400

Last version that worked well

Unknown/Other

Affected platforms

Windows, Android

Affected platform versions

Windows 10.0.19041.0

Did you find any workaround?

No response

Relevant log output

No response

[Eilon]

More repro info here: https://github.com/dotnet/maui/issues/9481. Per the other issue, we likely need to do some UrlDecode on the "URL"-ish path to fix up spaces and perhaps other path-unfriendly characters.

[Eilon]

The repro is actually quite simple: dotnet new maui-blazor -o "Test With Spaces" and you get this broken app:

[TCNOco]

Just to be clear, the normal Blazor server has absolutely no issue handling %20. It seems to only be MAUI Blazor. A little annoying to change how my programs work to get around this (swap ' ' with '_' for example, and rename all the files) but not the end of the world.

[Eilon]

@TcNobo , yup, this bug is entirely specific to Blazor Hybrid. It needs to un-escape data that comes from the native webview (e.g. WebView2) so that it can use that as a file system path.

[mkArtakMSFT]

This is a dupe of https://github.com/dotnet/maui/issues/10780