- Electron version: `0.37.4`
- Operating system: Windows

When I maximize my [frameless](https://github.com/electron/electron/blob/master/docs/api/frameless-window.md) electron window a small part of the window in an unmaximized state is visible on a secondary monitor.

**Screenshot**
![electronbug](https://cloud.githubusercontent.com/assets/6634592/14762341/8849c728-09bb-11e6-85d8-de12db3fee2d.PNG)

You can visibly see the "line between the monitors" and you can see some really strange overhanging content that is over that line.

**Steps to reproduce**  
1. Open an electron app
2. Maximize the app on your secondary display
3. Look closely for the overflow onto your primary display

This might take a few times to trigger, it appears to do it about 70% of the time :confused: 

atom/browser/native_window_views.cc
window_->SetFullscreen(fullscreen);
#else
  if (IsVisible())
    window_->SetFullscreen(fullscreen);
  else if (fullscreen)
    window_->native_widget_private()->ShowWithWindowState(
        ui::SHOW_STATE_FULLSCREEN);
  
  if (fullscreen)
    SetMenuBarVisibility(false);
  else
    SetMenuBarVisibility(!menu_bar_autohide_);
#endif
}
bool NativeWindowViews::IsFullscreen() const {
  return window_->IsFullscreen();
}
void NativeWindowViews::SetBounds(const gfx::Rect& bounds, bool animate) {
#if defined(USE_X11)
  
  
  if (!resizable_) {
    SetMaximumSize(bounds.size());
    SetMinimumSize(bounds.size());
  }
#endif
  window_->SetBounds(bounds);
}
gfx::Rect NativeWindowViews::GetBounds() {