in debug mode reference errors in QML Connections

import QtQuick 2.12
import QtQuick.Window 2.12

Window {
    visible: true
    width: 640
    height: 480

    Rectangle {
        id: tra
        anchors.fill: parent
        color: "red"

        signal test(int value);

        MouseArea {
            anchors.fill: parent

            onClicked: {
                tra.test(1);
            }
        }
    }

    Connections {
        target: tra
        enabled: true
        ignoreUnknownSignals: true

        onTest: {
            console.log("Value: " + value);
        }
    }
}