Items trigger warning in QTransform: "QTransform::translate with NaN called"

>	Qt5Guid.dll!QTransform::translate(double dx, double dy) Line 418	C++
 	Qt5Quickd.dll!QQuickItemPrivate::itemToParentTransform(QTransform & t) Line 2643	C++
 	Qt5Quickd.dll!QQuickItemPrivate::itemToWindowTransform() Line 2632	C++
 	Qt5Quickd.dll!QQuickItemPrivate::windowToItemTransform() Line 2621	C++
 	Qt5Quickd.dll!QQuickItem::mapFromScene(const QPointF & point) Line 6892	C++
 	Qt5Quickd.dll!QQuickMouseArea::geometryChanged(const QRectF & newGeometry, const QRectF & oldGeometry) Line 956	C++
 	Qt5Quickd.dll!QQuickItem::setY(double v) Line 5821	C++
 	Qt5Quickd.dll!QQuickAnchorsPrivate::setItemY(double v) Line 395	C++
 	Qt5Quickd.dll!QQuickAnchorsPrivate::updateVerticalAnchors() Line 583	C++
 	Qt5Quickd.dll!QQuickAnchorsPrivate::itemGeometryChanged(QQuickItem * __formal, const QRectF & newG, const QRectF & oldG) Line 455	C++
 	Qt5Quickd.dll!QQuickItem::geometryChanged(const QRectF & newGeometry, const QRectF & oldGeometry) Line 3279	C++
 	Qt5Quickd.dll!QQuickItem::setY(double v) Line 5821	C++

void QQuickItemPrivate::itemToParentTransform(QTransform &t) const
{
    if (x || y)
        t.translate(x, y);