Donut title does not render if data is loaded via async

Hello! Thank you very much for the terrific product.

I have a donut chart being generated via data from a service. I have the chart itself working by setting the data in $scope.datapoints and $scope.datacolumns. However, the donut chart title does not appear.

I've created a workaround in the meantime by appending the title to the c3-chart-arcs-title, but I'd love to know if this could be resolved or if there's a better way to achieve the same.

Thanks!