QSlider fail to repaint on macOS Monterey

#include <QApplication>  
#include <QDialog>
#include <QSlider>
#include <QPlainTextEdit>
#include <QSpacerItem>
#include <QGridLayout>
#include <iostream>
int main(int argc, char **argv)
{
	QApplication app(argc, argv);
	QDialog dlg;
        // Create slider with value range 0-100
	auto * slider = new QSlider(Qt::Horizontal, &dlg);
	slider->setMinimum(0);
	slider->setMaximum(100);
	slider->setValue(50);	
        // Create text edit which display/sets the slider value
	auto * edit = new QPlainTextEdit(&dlg);	// Layout
	auto * grid = new QGridLayout;
	grid->addWidget(edit, 0, 0);
	grid->addWidget(slider, 1, 0);
	dlg.setLayout(grid);	
        // slider signal handling, update value to edit
	dlg.connect(slider, &QSlider::valueChanged, [edit](int value){
		std::cout << "onSliderValueChanged: " << value << std::endl;
		edit->blockSignals(true);
		edit->setPlainText(std::to_string(value).c_str());
		edit->blockSignals(false);
	});
        // edit signal handling, update value to slider
	dlg.connect(edit, &QPlainTextEdit::textChanged, [edit, slider](){
		int v = 0;
		try {
			v = std::stoi(edit->toPlainText().toStdString());
		} catch (...) {}
		std::cout << "onEditEditingFinished(): " << v << std::endl;
		slider->blockSignals(true);
		slider->setValue(v);
		slider->blockSignals(false);
	});	
        dlg.show();
        return app.exec();
}