Steps to Reproduce

<charts id="chart" type="line" title="Season Average Temperature" apply="org.zkoss.zkcharts.essentials.FirstChartComposer"/>
2. click the top-right menu, select "view in full screen"
3. press ESC to exit the full screen

Current Result

the chart keeps in the full-screen size

Expected Result

the chart restore back to the original size

Debug Information

• it's a highcharts bug and was fixed in 9.0.1.

Workaround

        .z-charts{
            height:50%;
            width: 80%;
        }

both px or percentage work.