* Electron version: 1.8.2
* Operating system: macos 10.13.3

Reproducing repo: https://github.com/ibash/electron-webkit-app-drag

Demonstrates a bug where `-webkit-app-region: drag` causes a browser view in front of it to miss click events. Oddly - it does not prevent hover events.

Steps:
1. Clone https://github.com/ibash/electron-webkit-app-drag, `yarn install`, `yarn start`
2. Click "button1"
3. Click "button2"

Expected:

Clicking button1 or button2 pops up an alert: "button clicked!"

Actual:

Only clicking button2 pops up an alert: "button clicked!"

atom/browser/api/atom_api_browser_window.cc
window_->Focus(true);
}
void BrowserWindow::Blur() {
  window_->Focus(false);
}
bool BrowserWindow::IsFocused() {
  return window_->IsFocused();
}
void BrowserWindow::Show() {
  window_->Show();
}
void BrowserWindow::ShowInactive() {
  
  if (IsModal())
    return;
  window_->ShowInactive();
}
void BrowserWindow::Hide() {
  window_->Hide();
}
bool BrowserWindow::IsVisible() {
  return window_->IsVisible();
}
bool BrowserWindow::IsEnabled() {
  return window_->IsEnabled();
}
void BrowserWindow::SetEnabled(bool enable) {
  window_->SetEnabled(enable);
}
void BrowserWindow::Maximize() {