Display total row in Ecommerce\Sales reports

I would like to show the totals in the Ecommerce\Sales Category report
I found out that by changing:
$this->config->show_totals_row = true
in Goals\Visualizations\Goals.php, the option “Show Totals Row” is displayed in the bottom left gear icon
But even with that option checked only the Visit column is shown on screen, other column such as “Total Revenue” are still not shown

With some debugging i found out that those values are present in the row object, but for the normal rows the values array is “flattened” from an array which contains other arrays into a one dimensional one, while for the totals the value remains an array with other arrays inside

Is there a way to transform the totals row in the same way as the other row?
Or maybe i’m missing an easier solution?