Steps to Reproduce

http://zkfiddle.org/sample/2obka33/2-Combowidget-missing-close-event-on-scroll
Scroll to bandbox
Open bandbox
Log show bandbox status on server side as open

Scroll the container away from the bandbox
When the bandbox leave the view, the popup is automatically closed

Current Result

Popup is closed, but server is not updated with closed status

Expected Result

Popup closes, server receive a closed status

Debug Info

in zul.inp.ComboWidget.onScroll()
this.close();
doesn't contain an option to send to server.
(close(opts) method only send if a opts.sendOnOpen = true is passed when calling the function)

Root Cause

Workaround

TESTED FOR ZK 8.0.5

<script><![CDATA[
zk.afterLoad('zul.inp', function() {
	var xComboWidget = {};
	zk.override(zul.inp.ComboWidget.prototype, xComboWidget ,{
		onScroll: function (wgt) {
			if (this.isOpen()) {
				
				if (wgt) {
					var inp = this.getInputNode();
					
					if (inp && zul.inp.InputWidget._isInView(this))
						zk(this.getPopupNode_()).position(inp, 'after_start');
					else{
						opts = {sendOnOpen:true};
						this.close(opts);
					}
				}
			}
		}
	});//zk.override
});//zk.afterLoad
]]></script>