I am having problem to set the highcharts to complete width of the parent div container in Salesforce1 Lightning app when locker service is enabled. I haven't given any specific width in the highcharts configuration, but only to the parent div comprising the highcharts. But the highcharts is not being rendered as full width of the container.
<div aura:id="chart" class="chart" style="height:100%;width: 100%; margin: 0 auto;">
</div>