before the ehcharts you could "enlarge" the trend graph which would give you a bigger graph

(took you to $JOBURL/test/?width=800&height=600

after the ehchart migration (which looks beautiful) the enlarge option is gone, and you have to manually go to the URL (which gets you the legacy graph and not the new one).

the enlarge should be discoverable and the end result should use the new style widget.