Steps to Reproduce

Run any chart without hflex / vflex or width / height
open fullscreen
close fullscreen

Current Result

chart content is still the same size as fullscreen

Expected Result

content should restore to original size

Debug Information

side effect of https://tracker.zkoss.org/browse/ZKCHARTS-113 after it was fixed on highcharts itself

Workaround

remove workflow

	<script><![CDATA[
	zk.afterLoad("chart", function () {
	    var _xCharts = {};
	    zk.override(chart.Charts.prototype, _xCharts, {
            _onFullscreen: function() {
				//size is now handled by fullscreen module of highcharts, do nothing
            },
	     });
	});
]]></script>