void UpdateElementVisiblity()
    {
        if (m_CustomLock)
        {
            return;
        }
        if (Sibling == null)
        {
            return;
        }
        Rect targetRect = Sibling.QuickRect();

        if (Sibling is LMS_GuiBaseVerticalScroller)
        {
            m_Hidden = QuickRect().y > targetRect.y;
        }
    }