RowLayout added with Repeater in ColumnLayout has non-functional Layout.fillWidth

import QtQuick 2.9

import QtQuick.Layouts 1.3

ColumnLayout {
    id: root

    property var someModel: [ "A" ]
    width: 800

    Repeater {
        model: root.someModel

        delegate: Item {
            Layout.fillWidth: true
            Text {
                anchors.centerIn: parent
                text: "With Item: Takes the whole width"
            }
        }
    }

    Repeater {
        model: root.someModel

        delegate: RowLayout {
            Layout.fillWidth: true 
            Text {
                Layout.alignment: Qt.AlignVCenter | Qt.AlignHCenter
                text: "With RowLayout: Does not take the whole width"
            }
        }
    }

    Repeater {
        model: root.someModel

        delegate: Loader {
            Layout.fillWidth: item.Layout.fillWidth
            sourceComponent: RowLayout {
                Layout.fillWidth: true 
                Text {
                    Layout.alignment: Qt.AlignVCenter | Qt.AlignHCenter
                    text: "With Loader and RowLayout: takes the whole width"
                }
            }
        }
    }
}