alignment problem with DayOfWeekRow and WeekNumberColumn

[JM baubet]

Hello everyone,
I am sour MAC OS and I create a QML Python application
I'm making a calendar widget, with QTCreator.
No particular problem at runtime when I launch my application with QtCreator.

But if I run it from a terminal with the python3 main.py command I have alignment problems for the widgets DayOfWeekRow and WeekNumberColumn.

Does anyone have an explanation?

Thanks

This my code

    WeekNumberColumn {
        id: week_col
        anchors.top:  corner.bottom

        anchors.left: parent.left
        implicitWidth: corner.width
        implicitHeight: 222
        //spacing: 1
        leftPadding: 0
        rightPadding: 0
        month: month_grid.month
        year: month_grid.year
        locale: dateTimeLLocale

        delegate: Text {
            Layout.fillWidth: true
            Layout.fillHeight: true
            text: weekNumber
            font: week_col.font
            color: Material.foreground
            horizontalAlignment: Text.AlignHCenter
            verticalAlignment: Text.AlignVCenter
            required property int weekNumber
        }
        contentItem: Rectangle {
            color: Material.color(couleur, Material.Shade200)

            //border.color: "black"
            ColumnLayout {
                anchors.fill: parent
                spacing: week_col.spacing
                Repeater {
                    model: week_col.source
                    delegate: week_col.delegate
                }
            }
        }
    }

    //1-7
    DayOfWeekRow {
        id: week_row
        anchors.top: choixMois.bottom
        anchors.left: corner.right
        anchors.right: parent.right
        implicitHeight: corner.height
        spacing: 0
        topPadding: 0
        bottomPadding: 0
        locale: Qt.locale("fr_FR")

        delegate: Text {
            Layout.fillWidth: true
            Layout.fillHeight: true
            text: shortName
            font: week_row.font
            color: Material.foreground
            horizontalAlignment: Text.AlignHCenter
            verticalAlignment: Text.AlignVCenter
            required property string shortName
        }
        contentItem: Rectangle {
            //color: Material.backgroundColor
            color: Material.color(couleur, Material.Shade200)

            RowLayout {
                anchors.fill: parent
                spacing: week_row.spacing
                Repeater {
                    model: week_row.source
                    delegate: week_row.delegate
                }
            }
        }
    }