QpainterPath - odd fragment at the beginning

[derschuhmann]

I created the most simple arc with the following code and paint it with a 50px wide QPen. There are no other elements in the path. Can anyone help me to find the cause of the strange triangle at the start of the arc?

Screenshot.jpg

QRectF rect(pCenter.x() -200.0, pCenter.y() -200.0, 400.0,400.0);
QPainterPath path = QPainterPath(QPointF(881.421,398.579));
path.arcTo(rect,45,45);
painter.drawPath(path);
qDebug() << "pCenter:" << pCenter;
qDebug() << "path:" << path;

QRectF rect(pCenter.x() -200.0, pCenter.y() -200.0, 400.0,400.0);
QPainterPath path = QPainterPath(QPointF(881.421,398.579));
path.arcTo(rect,45,45);
painter.drawPath(path);
qDebug() << "pCenter:" << pCenter;
qDebug() << "path:" << path;

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The debug printout is:
pCenter: QPointF(740,540)
path: QPainterPath: Element count=5
-> MoveTo(x=881.421, y=398.579)
-> LineTo(x=881.421, y=398.579)
-> CurveTo(x=845.228, y=362.386)
-> CurveToData(x=795.228, y=340)
-> CurveToData(x=740, y=340)