ListGrid autofit problem in 5.0p and GWT 2.7

[navrkal.pavel]

I have problem after updating Smartgwt from 4.1p to 5.0p_2015_02_25 in last versions of FF, IE and Chrome

If I load ListGrid data from datasource, the autofit not succeed in first load.
On the second load the autofit works OK.

Here is small example:
If you click first time to "Set data" button, the autofit does not work. On second click it is OK.

package x.y.z;

import com.google.gwt.core.client.EntryPoint;
import com.smartgwt.client.data.DataSource;
import com.smartgwt.client.data.fields.DataSourceTextField;
import com.smartgwt.client.types.AutoFitWidthApproach;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridRecord;
import com.smartgwt.client.widgets.layout.VLayout;


public class LGTest implements EntryPoint{

	@Override
	public void onModuleLoad() {
		final ListGrid lg = new ListGrid();
		lg.setDataSource(new TestDS());
		lg.setAutoFitFieldWidths(true);
		lg.setAutoFitExpandField("f3");
		lg.setAutoFitWidthApproach(AutoFitWidthApproach.BOTH);
		lg.setWidth100();
		lg.setHeight100();
		lg.setData(new ListGridRecord[]{});

		IButton btSetData = new IButton("Set data", new ClickHandler() {

			@Override
			public void onClick(ClickEvent event) {
				lg.invalidateCache();
				lg.fetchData();
			}
		});

		VLayout vl = new VLayout();
		vl.addMember(lg);
		vl.addMember(btSetData);
		vl.setWidth100();
		vl.setHeight100();
		vl.draw();
	}

	public class TestDS extends DataSource {

		public TestDS() {
			setFields(new DataSourceTextField[]{
					new DataSourceTextField("f1", "field 123"),
					new DataSourceTextField("f2", "field xyz"),
					new DataSourceTextField("f3", " ")
			});

			setTestData(getData());
			setClientOnly(true);
		}
	}

	protected ListGridRecord[] getData() {
		ListGridRecord[] recs = new ListGridRecord[10];
		for (int i = 0; i< recs.length; i++) {
			recs[i] = new ListGridRecord();
			recs[i].setAttribute("f1", "ListGridField_1_ListGridRow_" + i);
			recs[i].setAttribute("f2", "ListGridField_2_ListGridRow_" + i);
		}
		return recs;
	}
}

Thanks Pavel