Qt setUseOpenGL(true) and removeSeries() do not update QChart - c++

Question

The Problem
I'm using a Qt LineChart, this QLineChart can load and remove data without a problem on CPU rendering. However, QChart removeSeries() does not update my QLineChart properly when using setUseOpenGL(true). The removed data is still visible on the QChart. Strangely, when hovering the mouse over the QChart, the QChart is updated and data is removed.
Expected Result
Update QChart after calling removeSeries().
Observed Result
QChart is not updated.
What I've tried
Call ChartView repaint() -- no effect
Emit custom QEvent to simulate mouse hover over QChart -- no effect
Set Widget which contains QChartView to FullViewportUpdate -- no effect
I'm all out of ideas. All suggestions are welcome. Relevant code:
QLineSeries *series3= data->getScanLineSeries();
series3->setUseOpenGL(true);
if(data->getLineSeriesOnChart() == false)
...
{
chart->addSeries(series3);
data->setLineSeriesOnChart(true);
std::cout << "Series added to chart.";
qDebug() << QString("Series added to chart");
}
else
{
chart->removeSeries(series3);
data->setLineSeriesOnChart(false);
qDebug() << QString("ERROR: this series was already on the chart, removing QLineSeries");
return chart;
}
...
(axes handling)
return chart;

Answer 1

I have checked the problem, and now I have a temporary solution and not very elegant, it may serve to advance, I have noticed that the chart is updated when you resize the chart, then this is a code that can help you:
chartView->resize(chartView->size() + QSize(1, 1));
chartView->resize(chartView->size() - QSize(1, 1));
I'll keep on looking for a better solution
Example:
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QLineSeries *series = new QLineSeries();
series->append(0, 6);
series->append(2, 4);
series->append(3, 8);
series->append(7, 4);
series->append(10, 5);
*series << QPointF(11, 1) << QPointF(13, 3) << QPointF(17, 6) << QPointF(18, 3) << QPointF(20, 2);
series->setUseOpenGL(true);
QChart *chart = new QChart();
chart->legend()->hide();
chart->addSeries(series);
chart->createDefaultAxes();
chart->setTitle("Simple line chart example");
QChartView *chartView = new QChartView(chart);
chartView->setRenderHint(QPainter::Antialiasing);
QTimer timer;
QObject::connect(&timer, &QTimer::timeout, [chart, series, chartView](){
qDebug()<<chart->series();
if(!chart->series().isEmpty())
chart->removeSeries(series);
else
chart->addSeries(series);
chartView->resize(chartView->size()+QSize(1, 1));
chartView->resize(chartView->size()-QSize(1, 1));
});
timer.start(1000);
QMainWindow window;
window.setCentralWidget(chartView);
window.resize(400, 300);
window.show();
return a.exec();
}