Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.67.2
• Chrome Version: 101
• OS Version: Chrome OS (probably others too)

Steps to Reproduce:

1. Open https://vscode.dev
2. Install as a PWA
3. When an editor has the focus, shortcuts like Ctrl-W or Ctrl-N are correctly handled by vscode.
4. Open an image or a webview, try again Ctrl-W or Ctrl-N. It's handled by the browser.

At Google, we've had multiple reports like this. Ctrl-W will sometimes close a tab (as expected); it will sometimes close the full app (which can be very annoying). I've reproduced the same issue with Ctrl-N: depending on what has the focus, Chrome might open a new browser tab or not.