Web Workers API doesn't work

[vchirikov]

Description

Web Workers API instead of sources of a file gets source of the index.html.
I mean fetch() returns right file, but new Worker() doesn't. Check the screenshots and gif. Is it a webview2 bug or a buf inside of maui wrapper of the webview2?

Version
SDK:
Runtime: 99.0.1150.46
Framework: MAUI
OS: win11 / android / any (?)

Repro Steps

cc: @champnic

AB#38653528

[champnic]

Hey @vchirikov - thanks for the bug report, and sorry you are hitting this! Do you see the correct behavior if you run this in the Microsoft Edge browser, or another WebView2 app?

[vchirikov]

Do you see the correct behavior if you run this in the Microsoft Edge browser

yes, in MS Edge everything is ok

[vchirikov]

it's strange, if I use
<Content Include="..\UI.Blazor.Host\wwwroot\**\*.*" Link="wwwroot\%(RecursiveDir)%(Filename)%(Extension)" /> in csproj, the files will be copied, but the new Worker() doesn't work. If I copy files into wwwroot in the maui project directly it will work (except serviceWorker api?).

Hm..

[champnic]

Thanks for confirming - I've added this bug to our backlog to take a closer look. Is this blocking you, or do you have workarounds for now?

[vchirikov]

https://github.com/dotnet/maui/blob/main/src/BlazorWebView/src/Maui/Windows/WinUIWebViewManager.cs#L56-L59

Looks like MAUI issue..
Can you move the issue to their repo?