Not hitting breakpoints in web extension running in VS Code Desktop stable

[aeschli]

Version: 1.59.1 (user setup)
Commit: 3866c35
Date: 2021-08-19T11:56:46.957Z
Electron: 13.1.7
Chrome: 91.0.4472.124
Node.js: 14.16.0
V8: 9.1.269.36-electron.0
OS: Windows_NT x64 10.0.19043

JavaScript debugger: v1.59.0

• clone https://github.com/microsoft/vscode-extension-sample and open VS Code in folder helloworld-web-sample
• install the recommended extensions
• set a breakpoint the command handler of extension.ts: https://github.com/microsoft/vscode-extension-samples/blob/66223aae68dbea6313b80aecbcac99e8605c21b4/helloworld-web-sample/src/web/extension.ts#L20
• from the run viewlet run Run Extenion
• in the Extension Development Host window run the Hello World command

dialog shows that we are running in the web extension host (Hello World from helloworld-web-sample in a web extension), but breakpoint is not hit.

In the latest insider build it works (1.60.0-insider , c089133, 2021-08-19T05:15:46.693Z) JavaScript debugger: v1.60.0

[aeschli]

Now I got a breakpoint hit in stable, but the breakpoint was a on the line below the handler. So maybe its source map related.

[connor4312]

The latest nightly extension is required to debug web extensions, which requires 1.60-insiders or newer.

/duplicate #128637