- Electron version: 1.1.3 & 1.2.0
- Operating system: Windows 10 Build 10580

The icon of a window is reset after minimizing it for a short period of time (about 2 minutes), hiding it and showing it again.
An app to reproduce this bug: https://github.com/taroxd/electron-quick-start

atom/browser/native_window_views.cc
#if defined(OS_WIN)
  return ::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME;
#else
  return CanResize();
#endif
}
void NativeWindowViews::SetMovable(bool movable) {
  movable_ = movable;
}
bool NativeWindowViews::IsMovable() {
#if defined(OS_WIN)
  return movable_;
#else
  return true;  
#endif
}
void NativeWindowViews::SetMinimizable(bool minimizable) {
#if defined(OS_WIN)
  FlipWindowStyle(GetAcceleratedWidget(), minimizable, WS_MINIMIZEBOX);
#endif
  minimizable_ = minimizable;
}
bool NativeWindowViews::IsMinimizable() {