tableAttrs in table layout

[winklerd]

layoutConfig: {
    columns: 5,
    tableAttrs: {
        style: {
            //width: '45%',
            borderCollapse: 'separate',
            borderSpacing: '9px 0px'
        }
    }
}

I have the above code in a panel with a table layout, but they are not showing up in the style attribute of the table. Other attributes, like the width that is currently commented out, will show up. Are these not valid for some reason?