QWebEngine can't load localhost on Windows

[GGAllin]

Hello everyone!

I'm porting old WebKit framework to the new QWebEngine
I'm using Qt 5.6
I need to load local webapps through localhost to bypass flash player security using QtcpServer.

MainWindows start my tcp server with port 5052
in My webEngineClass (webenginewidget.cpp) there is a method that open the webapp

void WebEngineWidget::openDocument()
{
    QString webAppUrl = ResourceManager().getWebappsDir("videoswf/index.html").absolutePath();
    QString indexUrl = "http://localhost:5082" + webAppUrl;
    QUrl index(indexUrl);
    qInfo() << "openVideoDocument" << index;
    view->load(index);
}

So on loadFinished i can call runjavascript to create my embed video swf
This work very well on mac Osx
output of qInfo:

openVideoDocument QUrl("http://localhost:5082/Users/dev/build/webapps/videoswf/index.html")

But in Windows
qInfo() << "openVideoDocument" << index show

qInfo() << "openVideoDocument" << QUrl("");

Any Idea ??
Thanks in advanced
GG