QListWidget currentRowChanged does not trigger QStackedWidget proper view

I have been studying how to implement QStackedWidget and QListWidget and how the choice of a list inside QListWidget affect the widget to show on the stack widget. After successfully going through this post I understand the basic of the QStackedWidget. I wanted to pass to a more detailed OOP example and use .ui forms to show the right selection of the QWidget on a QStackedWidget based on the selection on the QListWidget.

The problem: From the image below as I select the first choice nothing happens and nothing happens if I select "Sonar Page", but when I select the last choice "Output Page" I see the widget on the QStackedWidget, but it should appartain to the first choice. Signals of QListWidget::currentRowChanged does not seem to be triggered correctly. Why is that happening? Basically seems to be triggered only the last choice instead all the others.

If I chose the last one I see the form but it should appear when I do the first selection "Vessel Positioning System Page"

main.cpp

#include "optionsdialog.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    OptionsDialog w;
    w.show();
    return a.exec();
}

optionsdialog.cpp

#include <QDialog>
#include "vesselpossystemwidget.h"
#include "sonarform.h"
#include "outputform.h"
class OptionsDialog;
}

class OptionsDialog : public QDialog
{
    Q_OBJECT
public:
    explicit OptionsDialog(QWidget *parent = nullptr);
    ~OptionsDialog();
    // disabled
    OptionsDialog(const OptionsDialog&) = delete;
    OptionsDialog& operator=(const OptionsDialog&) = delete;

private:
    Ui::OptionsDialog *ui;
    VesselPosSystemWidget *mVesPos;
    SonarForm *mSonar;
    OutputForm *mOutput;
};

#endif // OPTIONSDIALOG_H

optionsdialog.cpp

#include "optionsdialog.h"
#include "ui_optionsdialog.h"

OptionsDialog::OptionsDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::OptionsDialog)
{
    ui->setupUi(this);
    mVesPos = new VesselPosSystemWidget;
    mSonar = new SonarForm;
    mOutput = new OutputForm;
    ui->stackedWidget->addWidget(mVesPos);
    ui->stackedWidget->addWidget(mSonar);
    ui->stackedWidget->addWidget(mOutput);
    QObject::connect(ui->listWidget, &QListWidget::currentRowChanged,
            ui->stackedWidget, &QStackedWidget::setCurrentIndex);
}

OptionsDialog::~OptionsDialog()
{
    delete ui;
}

sonarform.h

#include <QWidget>

namespace Ui {
class SonarForm;
}

class SonarForm : public QWidget
{
    Q_OBJECT

public:
    explicit SonarForm(QWidget *parent = nullptr);
    ~SonarForm();
    // disabled
    SonarForm(const SonarForm&) = delete;
    SonarForm& operator=(const SonarForm&) = delete;

private:
    Ui::SonarForm *ui;
};

#endif // SONARFORM_H

sonarform.cpp

#include "sonarform.h"
#include "ui_sonarform.h"

SonarForm::SonarForm(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::SonarForm)
{
    ui->setupUi(this);
}

SonarForm::~SonarForm()
{
    delete ui;
}

Ways I tried to solve the issue:

Also from the same source is clear how children should be passed for inheritance, and that is exactly what I did using the .ui form. However I was not fully able to understand clearly why this process didn't work exactly how I expected. All the widgets are QWidgets, but the main dialog is a QDialog do that inheritance is taked care of.

The problem seems to be the QListWidget::currentRowChanged signal of the QListWidget. I tried also the following approach to solve the problem but did not work as well:

Second way I tried to solve the error

In the attempt below I used the SIGNAL on_listWidget_currentRowChanged to clearly trigger the choice on the list but that didn't work too:

optionsdialog.h

class OptionsDialog : public QDialog
{
    Q_OBJECT
public:
    explicit OptionsDialog(QWidget *parent = nullptr);
    ~OptionsDialog();
private slots:
    void on_listWidget_currentRowChanged(int currentRow);
private:
    Ui::OptionsDialog *ui;
    VesselPosSystemWidget *mVesPos;
    SonarForm *mSonar;
    OutputForm *mOutput;
};
#endif // OPTIONSDIALOG_H

optionsdialog.cpp

OptionsDialog::OptionsDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::OptionsDialog)
{
    ui->setupUi(this);
    mVesPos = new VesselPosSystemWidget;
    mSonar = new SonarForm;
    mOutput = new OutputForm;
    ui->stackedWidget->addWidget(mVesPos);
    ui->stackedWidget->addWidget(mSonar);
    ui->stackedWidget->addWidget(mOutput);

    connect(ui->listWidget, &QListWidget::currentRowChanged,
        [=](int index) { on_listWidget_currentRowChanged(index); });
}

OptionsDialog::~OptionsDialog()
{
    delete ui;
}

void OptionsDialog::on_listWidget_currentRowChanged(int currentRow)
{
    ui->stackedWidget->setCurrentIndex(currentRow);
}

In addition to that I am sure and can confirm that QListWidget::currentRowChanged signal of the QListWidget is correct and according to the proper notation because I followed official documentation updated to latest notation.

Please point to the right direction on how to solve this error and solving this issue.