Is it a normal behaviour that main app window on Android is automatically resized to fill all available space on the screen (depending on the visibility of the title bar or task bar), but on iOS it is not?

For example, the following main window:

import QtQuickWindow {
    //width: 640
    //height: 480
    visible: true
    title: qsTr("Hello World")

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

looks like this on iOS simulator:

I found some complicated solution and tried to add 

    visibility: Window.FullScreen

and

    visibility: Window.Maximized

but they did not take an effect, see attached source code in GreenRect.zip

I also published this on the forum, but did not get an answer.