Bad column wrapping on a particular case

#include <QApplication>
#include <QDebug>
#include <QTextEdit>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextEdit e;
    e.setVisible(false);
    e.setMinimumWidth(1000);
    e.setFontPointSize(14.0);
    // e.setFontFamily({});
    e.setLineWrapColumnOrWidth(72);
    e.setLineWrapMode(QTextEdit::FixedColumnWidth);
    e.setWordWrapMode(QTextOption::WordWrap);
    e.setPlainText("Since there may be a significant amount of received input frames ahead of the");
    QTextCursor cursor(e.document());
    cursor.select(QTextCursor::LineUnderCursor);
    qDebug() << cursor.selectedText(); // Should *not* include "of"
    e.show();
    return app.exec();
}