Both p01 and p02 of 10.3 do not work properly if launched from a qtapplication. 

A fix by Laurent exists but it is not applied to these patches: 

The function 

G4OpenGLQtViewer::isCurrentWidget() in G4OpenGLQtViewer.cc needs to account for external app:

bool G4OpenGLQtViewer::isCurrentWidget(){
	G4Qt* interactorManager = G4Qt::getInstance ();
	if (!interactorManager->IsExternalApp()) {
		// Prevent from repainting a hidden tab (the current tab name has to be the one of th GL viewer)
  		if ( GetName() != fUiQt->GetViewerTabWidget()->tabText(fUiQt->GetViewerTabWidget()->currentIndex()).toStdString().c_str()) {
	  		return false;
  		}
	}
	return true;
}