### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

12.0.5

### What operating system are you using?

macOS

### Operating System Version

11.2.3

### What arch are you using?

arm64 (including Apple Silicon)

### Last Known Working Electron version

_No response_

### Expected Behavior

`document.hasFocus()` is only `true` for the window that has focus.

### Actual Behavior

Ever window reports `document.hasFocus()` to be `true` right after opening.

### Testcase Gist URL

https://gist.github.com/16e6fc829febd0cab115dfd0850a31be

### Additional Information

_No response_
shell/browser/api/electron_api_web_contents.cc
Emit("paint", dirty_rect, gfx::Image::CreateFrom1xBitmap(bitmap));
}
void WebContents::StartPainting() {
  auto* osr_wcv = GetOffScreenWebContentsView();
  if (osr_wcv)
    osr_wcv->SetPainting(true);
}
void WebContents::StopPainting() {
  auto* osr_wcv = GetOffScreenWebContentsView();
  if (osr_wcv)
    osr_wcv->SetPainting(false);
}
bool WebContents::IsPainting() const {
  auto* osr_wcv = GetOffScreenWebContentsView();
  return osr_wcv && osr_wcv->IsPainting();
}
void WebContents::SetFrameRate(int frame_rate) {
  auto* osr_wcv = GetOffScreenWebContentsView();
  if (osr_wcv)
    osr_wcv->SetFrameRate(frame_rate);
}
int WebContents::GetFrameRate() const {
  auto* osr_wcv = GetOffScreenWebContentsView();
  return osr_wcv ? osr_wcv->GetFrameRate() : 0;
}
#endif
void WebContents::Invalidate() {