private float ElementHeightCB(int index)
        {
            m_serializedObject.ApplyModifiedProperties();
            m_serializedObject.Update();

            Filter filter = GetFilterAtIndex(index);

            if (filter == null || (m_dragging && m_reorderableList.index == index))
            {
                return(EditorGUIUtility.singleLineHeight * 2);
            }

            return(filter.GetElementHeight());
        }