Steps to Reproduce

Run fiddle code in ZK 10
https://zkfiddle.org/sample/2qhcb2d/2-setRows-break-flex

Press button to trigger both setInvalidItems and setRows on listbox
Click in textbox

Current Result

textbox doesn't flex up to cell width

Expected Result

textbox flexes up to cell width

Debug Information

setInvalidateItems set _shallSize to true
setRows call onSize immediately, which removes the _shallSize value from the listbox
Since _shallSize is not true, listbox doesn't trigger size calculation for items, as it should have after processing commands.

(threshold attribute set to trigger invalidItems with single add, but would trigger without attribute if replaced content > 10)

Workaround

	<script><![CDATA[
		zk.afterLoad("zul.sel", function () {
		    var _xListbox = {};
		    zk.override(zul.sel.Listbox.prototype, _xListbox, {
		        setRows: function() {
		        	var shallSize = this._shallSize;
					var result = _xListbox.setRows.apply(this, arguments);
					this._shallSize = shallSize;
					return result;
		        }
		     });
		});
	]]></script>