For any1 wondering, its more or less > item->setPos(mNodeViewPtr->mapToScene(mNodeViewPtr->mapFromGlobal(QCursor::pos()))); you can most likely do mNodeViewPtr->viewport()->mapFromGlobal() for more precision I think but I didn't test it.

Then please provide a minimal compilable example that shows the behaviour.

@Dariusz "You can call QWidget::mapFromGlobal() to translate it to widget coordinates." (From https://doc.qt.io/qt-5/qcursor.html#pos)