Calling QGraphicsItem::setActive(false) for inactive item activates last panel

void QGraphicsItem::setActive(bool active)
{
    d_ptr->explicitActivate = 1;
    d_ptr->wantsActive = active;
    if (d_ptr->scene) {
        if (active) {
            // Activate this item.
            d_ptr->scene->setActivePanel(this);
        } else {
            // Deactivate this item, and reactivate the last active item
            // (if any).
            QGraphicsItem *lastActive = d_ptr->scene->d_func()->lastActivePanel;  
            d_ptr->scene->setActivePanel(lastActive != this ? lastActive : 0);  // <<<<<<------ assumes this item was active
        }
    }
}