Touch events inside QGraphicsWebView aren't recognised properly

#include <QApplication>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QGraphicsWebView>
#include <QGLWidget>
#include <QMainWindow>
#include <QFileInfo>
#include <QDir>
#include <qdebug.h>
#include <QWebView>
#include <QTouchEvent>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QMainWindow *mMainWindow = new QMainWindow();
    mMainWindow->setWindowTitle("TouchEvent");
    mMainWindow->showMaximized();

	

    QGraphicsScene* mGraphicsScene = new QGraphicsScene(mMainWindow);

    QGraphicsView* mGraphicsView = new QGraphicsView(mGraphicsScene);

    QBrush brush;
    brush.setColor(Qt::red);
    mGraphicsView->setBackgroundBrush(brush);

    mGraphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    mGraphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    mGraphicsView->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
    mGraphicsView->setViewport(new QGLWidget(mMainWindow));
 
    QGraphicsWebView* mGraphicsWebView = new QGraphicsWebView();

	mMainWindow->setAttribute(Qt::WA_AcceptTouchEvents);
	mGraphicsWebView->setAcceptTouchEvents(true);
	
	mGraphicsWebView->show();
	
	mGraphicsWebView->setUrl(QUrl("http://www.google.com"));
	
	mGraphicsScene->addItem(mGraphicsWebView);

    mMainWindow->setCentralWidget(mGraphicsView);
	
    mMainWindow->show();

    return app.exec();
}