QAbstractItemView dropEvent with Qt::MoveAction will parent to the wrong destination item.

Any reparenting attempted where the source item is before the destination within the internal model results in the wrong item parent. It seems to me as if the destination item is not stored before the source item moves to its destination. Thus making the mouse cursor in a different spot. See a visual demonstration of a QTreeView with vanilla QT drag and drop functionality going into the incorrect item below it.