QML nextItemInFocusChain() not working, always refers to self - qt

Question

Calling nextItemInFocusChain() from a child QML component seems to always return the current component. Understandably, calling forceActiveFocus() on that next item does nothing. Note that navigation via the tab key still works as expected.
Minimally Reproducible Example:
qml.qrc
<RCC>
<qresource prefix="/qml">
<file>main.qml</file>
<file>Child.qml</file>
</qresource>
</RCC>
main.cpp
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlContext>
int main(int argc, char *argv[])
{
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
#endif
QGuiApplication app(argc, argv);
QQmlApplicationEngine engine;
const QUrl url(QStringLiteral("qrc:/qml/main.qml"));
QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
&app, [url](QObject *obj, const QUrl &objUrl) {
if (!obj && url == objUrl)
QCoreApplication::exit(-1);
}, Qt::QueuedConnection);
engine.load(url);
return app.exec();
} // main
main.qml
import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.12
ApplicationWindow {
width: 800
height: 600
visible: true
visibility: "FullScreen"
title: "HelloWorld"
RowLayout {
spacing: 30
width: 600
Child {
Layout.fillWidth: true
id: test1
}
Child {
Layout.fillWidth: true
id: test2
}
Child {
Layout.fillWidth: true
id: tes3
}
}
onActiveFocusItemChanged: print("activeFocusItem: ", activeFocusItem)
}
child.qml
import QtQuick 2.12
import QtQuick.Controls 2.15
Item {
function focusNext()
{
console.log("focusing next...")
nextItemInFocusChain().forceActiveFocus()
}
Keys.onReturnPressed: focusNext()
TextField {
text: "TEST"
}
}

Answer 1

Putting the logic directly in the TextField results in the correct behavior:
TextField {
...
Keys.onReturnPressed: nextItemInFocusChain().forceActiveFocus()
}
It's unclear to me why the parent item cannot redirect focus in this way.