* Output of `node_modules/.bin/electron --version`: v3.0.10
* Operating System (Platform and Version): Windows 10 x64 (1803  17134.345)
* Output of `node_modules/.bin/electron --version` on last known working Electron version (if applicable):
v3.0.10
**Expected Behavior**
I would like to see the window move across the screen.

**Actual behavior**
The window moves around the screen. But first, the height of the window decreases.

**To Reproduce**
Write simple program that contains code:
`
mainWindow = new BrowserWindow({ width: 370,
		height: 270,
		x: 100,
		y: 100,
		resizable: false,
	 });
`
Start app. Grab the window with the mouse for its title and drag across the screen.

**Additional Information**
This error occurs when explicitly specifying the x, y coordinates of the window and the option "resizable: false".

atom/browser/native_window.cc
WPARAM w_param,
                                       LPARAM l_param) {
  for (NativeWindowObserver& observer : observers_)
    observer.OnWindowMessage(message, w_param, l_param);
}
#endif
views::Widget* NativeWindow::GetWidget() {
  return widget();
}
const views::Widget* NativeWindow::GetWidget() const {
  return widget();
}
const void* const NativeWindowRelay::kNativeWindowRelayUserDataKey =
    &NativeWindowRelay::kNativeWindowRelayUserDataKey;
void NativeWindowRelay::CreateForWebContents(
    content::WebContents* web_contents,
    base::WeakPtr<NativeWindow> window) {
  DCHECK(web_contents);
  DCHECK(!web_contents->GetUserData(kNativeWindowRelayUserDataKey));
  web_contents->SetUserData(kNativeWindowRelayUserDataKey,
                            base::WrapUnique(new NativeWindowRelay(window)));
}
NativeWindowRelay::NativeWindowRelay(base::WeakPtr<NativeWindow> window)
    : native_window_(window) {}
NativeWindowRelay::~NativeWindowRelay() = default;
}