Qt 6.8.1 Dark Mode button text colors issue

#include <QApplication>
#include <QWidget>
#include <QPushButton>
#include <QCheckBox>
#include <QVBoxLayout>
#include <QStyleHints>

#define DARK_MODE Qt::CheckState::Checked
#define LIGHT_MODE Qt::CheckState::Unchecked
#define BUTTONS_ENABLED Qt::CheckState::Checked
#define BUTTONS_DISABLED Qt::CheckState::Unchecked

QPushButton *button1;
QPushButton *button2;

void toggleButtonActivation(Qt::CheckState state)
{
    // If the state is checked, disable the buttons
    if (state == Qt::CheckState::Checked)
    {
        button1->setEnabled(true);
        button2->setEnabled(true);
    }
    else
    {
        button1->setEnabled(false);
        button2->setEnabled(false);
    }
}

void darkModeEnable(Qt::CheckState state)
{
    QStyleHints *styleHints = QGuiApplication::styleHints();

    if (state == Qt::CheckState::Checked)
    {
        styleHints->setColorScheme(Qt::ColorScheme::Dark);
    }
    else
    {
        styleHints->setColorScheme(Qt::ColorScheme::Light);
    }
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    // Here is the issue. If the system starts with light mode, it isn't much of a problem.
    // However, if the system starts with dark mode, the text on the buttons (if disabled) isn't visible anymore when switching to light mode.
    darkModeEnable(LIGHT_MODE); // Mode during start

    QWidget window;
    window.resize(320, 240);

    QCheckBox * checkBoxEnableButtons = new QCheckBox("Enable Buttons", &window);
    button1 = new QPushButton("Button 1", &window);
    button2 = new QPushButton("Button 2", &window);
    QCheckBox *checkBoxDarkMode = new QCheckBox("Dark Mode", &window);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(checkBoxEnableButtons);
    layout->addWidget(button1);
    layout->addWidget(button2);
    layout->addWidget(checkBoxDarkMode);
    window.setLayout(layout);

    toggleButtonActivation(BUTTONS_DISABLED);
    checkBoxEnableButtons->setCheckState(BUTTONS_DISABLED);

    QObject::connect(checkBoxEnableButtons, &QCheckBox::checkStateChanged, &toggleButtonActivation);
    QObject::connect(checkBoxDarkMode, &QCheckBox::checkStateChanged, &darkModeEnable);

    window.show();

    return a.exec();
}