WebView object created and destroyed dynamically makes android-app crash.

import QtQuick 2.4
import QtQuick.Window 2.2
//import QtWebView 1.1
Window {
    id: rootWindow
    Component.onCompleted: {
        var webv = Qt.createQmlObject(
            "import QtQuick 2.4; import QtWebView 1.0; WebView { url: 'http://www.qt.io/'; anchors.fill: parent; }", rootWindow);
        webv.destroy(10000);
    }
}