No Qt Quick Items besides MouseArea have a default cursor shape set

import QtQuick 2.6
import QtQuick.Window 2.0

import App 1.0

Window {
    width: 600
    height: 400
    visible: true

    Rectangle {
        anchors.fill: parent

        CustomItem {
            width: 200
            height: 200

            Rectangle {
                anchors.fill: parent
                color: "salmon"
            }
        }

        TextEdit {
            width: 100
            height: 30
            text: "I'm a TextEdit."

            Rectangle {
                anchors.fill: parent
                color: "transparent"
                border.color: "grey"
            }
        }
    }
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQuickItem>
#include <QCursor>
#include <QQuickWindow>

class CustomItem : public QQuickItem
{
public:
    CustomItem() {
        setCursor(QCursor(Qt::CrossCursor));
    }
};

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

    qmlRegisterType<CustomItem>("App", 1, 0, "CustomItem");

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    static_cast<QQuickWindow*>(engine.rootObjects().first())->setCursor(QCursor(Qt::ArrowCursor));

    return app.exec();
}

import QtQuick 2.6
import QtQuick.Window 2.0

import App 1.0

Window {
    width: 600
    height: 400
    visible: true

    Rectangle {
        anchors.fill: parent

        CustomItem {
            width: 200
            height: 200

            Rectangle {
                anchors.fill: parent
                color: "salmon"
            }
        }

        MouseArea {
            width: 100
            height: 30

            Rectangle {
                anchors.fill: parent
                color: "transparent"
                border.color: "grey"
            }
        }
    }
}