Incorrect Breakpoint Mapping When Attaching After Vite Dev Server Starts

[DrBearZay]

Describe the bug
When using VS Code's JavaScript Debugger to attach to a Vite dev server, the breakpoint source maps behave inconsistently depending on the startup sequence.

✅ Works as expected (Case A)

1. Start the debugger first, connecting.
2. Then start the Vite dev server (pnpm dev / npm run dev / vite), debugger connected.
3. Breakpoints map correctly to the expected source locations.

❌ Incorrect mapping (Case B)

1. Start the Vite dev server first.
2. Then start the debugger to attach to Chrome.
3. Breakpoint locations become incorrectly set to the compiled file— VS Code jumps to the wrong lines/files.
4. To make breakpoints map correctly again, I must manually run:location.reload()

Launch.json

    {
      "name": "Attach Render",
      "type": "chrome",
      "request": "attach",
      "port": 9222,
      "timeout": 60000,
      "urlFilter": "http://localhost/*",
      "webRoot": "${workspaceFolder}/sdk/renderer",
      "resolveSourceMapLocations": ["!**/node_modules/**"],
      "skipFiles": ["**/node_modules/**"],
    }

VS Code Version:

Additional context
I’m currently not able to provide the repository where the issue occurs, but I may try to create a minimal reproducible example when I have time.
The project affected by this bug is an Electron application whose renderer process is a multi-page Vite application.
Interestingly, I do not encounter this issue in another Electron project where the renderer is a single-page Vite application, so I’m not yet sure whether the bug is related to the multi-page setup, the Electron integration, or something else.
Sorry that I can’t share a more concrete reproduction at the moment.

[connor4312]

Please share a log file using the instructions in the issue template, thanks

[DrBearZay]

Please check your email, thanks 👀