QCborArray::toCborValue().toCbor() doesn't work properly

#include <QBuffer>
#include <QCborArray>
#include <QCborMap>
#include <QCborStreamReader>
#include <QCborStreamWriter>
#include <QCborValue>

int main(int argc, char *argv[])
{
    QVariantList args = {1, 2, 3, "bla"};
    QBuffer buff;
    buff.open(QIODevice::ReadWrite);
    QCborStreamWriter writer(&buff);
    writer.startMap();
        writer.append(quint8(1));
        writer.append(1);

        writer.append(quint8(2));
        //writer.startArray(); // doesn't help
        auto array = QCborArray::fromVariantList(args);
        writer.append(array.toCborValue().toCbor());
        //writer.endArray();

//      This one works a little bit, but it changes the type of the qvariants (from int to qbytearray)
//        writer.startArray(args.size());
//        for (const auto &arg : args)
//            writer.append(QCborValue::fromVariant(arg).toCbor());
//        writer.endArray();
    writer.endMap();

    buff.seek(0);
    QCborStreamReader reader(&buff);
    while (reader.hasNext() && !reader.isMap() && reader.lastError() == QCborError::NoError)
        reader.next();
    Q_ASSERT(reader.isMap());
    QCborValue invokePacketValues = QCborValue::fromCbor(reader);
    Q_ASSERT(reader.lastError() == QCborError::NoError);
    Q_ASSERT(invokePacketValues.isMap());
    int val1 = invokePacketValues[quint8(1)].toInteger();
    QVariantList argsRead = invokePacketValues[2].toArray().toVariantList();
    qDebug() << val1 << args << argsRead;
}