[BUG] Electron firstWindow times out after upgrading to 1.28.0

Context:

• Playwright Version: 1.28.0
• Operating System: Tested on Windows and Mac
• Node.js version: 16
• Browser: Electron
• Extra: Wasn’t a problem in 1.27.1 or below. Repros 100% of the time after upgrading.

Code Snippet

import { ElectronApplication, Page, _electron as electron } from "playwright";

(async () => {
  const electronApp = await electron.launch({
            args: [path.join(__dirname, "../dist/App.js"),
            '--enable-logging',
            '--skip-welcome',
            '--disable-telemetry',
            '--no-cached-data',
            ],
            env: {
                automation: "1",
                authConfig: JSON.stringify(config),
            }
        });
  const page = await electronApp.firstWindow(); // times out after 30 seconds
})();

Describe the bug

After upgrading to 1.28.0 Electron tests are all timing out. Downgrading to 1.27.1 resolves the issue. Example test to assist in repro can be found here

[cawa-93]

Still have this issue with 1.28.1

[mxschmitt]

Thanks for the repro! I filed https://github.com/microsoft/playwright/issues/19412 for it.

For the other folks who run into it, it would be amazing if you could provide us the logs which you get via setting the DEBUG=pw:api,pw:browser env var.