* 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
bool fullscreenable = true;
  bool fullscreen = false;
  if (options.Get(options::kFullscreen, &fullscreen) && !fullscreen) {
    
#if defined(OS_MACOSX)
    fullscreenable = false;
#endif
  }
  
  options.Get(options::kFullScreenable, &fullscreenable);
  SetFullScreenable(fullscreenable);
  if (fullscreen) {
    SetFullScreen(true);
  }
  bool skip;
  if (options.Get(options::kSkipTaskbar, &skip)) {
    SetSkipTaskbar(skip);
  }
  bool kiosk;
  if (options.Get(options::kKiosk, &kiosk) && kiosk) {
    SetKiosk(kiosk);
  }
#if defined(OS_MACOSX)
  std::string type;
  if (options.Get(options::kVibrancyType, &type)) {
    SetVibrancy(type);
  }
#endif
  std::string color;
  if (options.Get(options::kBackgroundColor, &color)) {