Wrong app window layout on split screen.

A sample app with the following main window

import QtQuick

Window {
    visible: true
    title: qsTr("Hello World")

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

    Rectangle
    {
        anchors.fill: parent
        anchors.margins: 5
        color: "green"
    }
}

looks incorrectly on split screen on my Android Phone Samsung Galaxy A54:

Is it a bug or I misunderstand something?

The problem is that my users expect app window to be resized and be visible entirely on split screen, but actually the bottom part of the app window is obscured by another app and is not accessible for users.

As far as I remember, previous QT versions (probably starting from QT5) resized main app window on split screen, but I am not 100% sure.