QML ListView section works in 6.5.1 but not in 5.15.2

The following code works as expected in 6.5.1 but not in 5.15.2

import QtQuick 2.15
import QtQuick.Window 2.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    ListView {
        anchors.fill: parent
        model: fakeModel
        delegate: Text {
            text: modelData.name
        }
        section.property: "blockName"
        section.criteria: ViewSection.FullString
        section.delegate: Text {
            text: section
            color: "red"
        }
    }

    property var fakeModel: [{
            "blockName": "ABC",
            "name": "Lorem Ipsum"
        }, {
            "blockName": "ABC",
            "name": "Front Raises"
        }, {
            "blockName": "ZXC",
            "name": "Band Tall "
        }, {
            "blockName": "ZXC",
            "name": "Overhead"
        }]
}

I'm using EndeavourOS Linux 6.1.55-1-lts

in 5.15.2:

in 6.5.2:

Does anyone know if there is any work around for making the listview sections work with qt5?

Thanks

As you indicated in the comments, for Qt5.15.x use ListModel. If you wish to keep your declarative array, you can read and convert it to populate your ListModel, e.g.

    ListView {
        anchors.fill: parent
        model: ListModel {
            function load(arr) { clear(); arr.forEach(e => append(e)) }
            Component.onCompleted: load(array_data)
        }
        delegate: Text {
            text: name
        }
        section.property: "blockName"
        section.criteria: ViewSection.FullString
        section.delegate: Text {
            text: section
            color: "red"
        }
    }
    
    property var array_data: [
        { "blockName": "ABC", "name": "Lorem Ipsum" },
        { "blockName": "ABC", "name": "Front Raises" },
        { "blockName": "ZXC", "name": "Band Tall " },
        { "blockName": "ZXC", "name": "Overhead" }
    ]