Button with menu does not have correct sizeHint on Ubuntu

ApplicationWindow {
    title: qsTr("Hello World")
    width: 640
    height: 480


    Button {
        text: qsTr("Hello World")
        anchors.centerIn: parent
        menu: Menu {
            title: qsTr("myMenu")
            MenuItem {
                text: qsTr("Hello1")
            }
        }
    }
}