Tooltips not working properly when a ListGrid cell is being edited.

Using SmartGWT 4.0 and GWT 2.5 we see an issue with tooltips not appearing on toolbar buttons that are enabled when a ListGrid cell editor has focus. Interestingly, we do get the tooltips for the disabled toolbar buttons, just not the enabled buttons. Is this a known issue? Below is an example slice of code.

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.types.Alignment;
import com.smartgwt.client.types.ListGridEditEvent;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridField;
import com.smartgwt.client.widgets.grid.ListGridRecord;
import com.smartgwt.client.widgets.layout.VLayout;
import com.smartgwt.client.widgets.toolbar.ToolStrip;
import com.smartgwt.client.widgets.toolbar.ToolStripButton;

/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class TooltipExample implements EntryPoint {

protected ListGrid exampleGrid;
protected ListGridField groupField;
protected ListGridField propertyField;
protected ListGridField valueField;

protected ToolStrip toolStrip;
protected ToolStripButton saveButton, closeButton;

/**
* This is the entry point method.
*/
public void onModuleLoad() {
RootPanel.get().add(getViewPanel());
}

public VLayout getViewPanel() {

VLayout layout = new VLayout();

groupField = new ListGridField("group", "Group");
groupField.setCanEdit(false);
propertyField = new ListGridField("property", "Property");
propertyField.setCanEdit(false);
valueField = new ListGridField("value", "Value");
valueField.setCanEdit(true);

exampleGrid = new ListGrid();
exampleGrid.setFields(groupField, propertyField, valueField);
exampleGrid.setWidth(500);
exampleGrid.setHeight(250);
exampleGrid.setEditByCell(true);
exampleGrid.setEditEvent(ListGridEditEvent.CLICK);
exampleGrid.setData(new AttributesData().getRecords());

toolStrip = new ToolStrip();
toolStrip.setWidth(500);
toolStrip.setHeight(30);
toolStrip.setAlign(Alignment.RIGHT);

saveButton = new ToolStripButton();
saveButton.setPrompt( "Save" );
saveButton.setTitle("Save");
saveButton.setPadding(5);
saveButton.setDisabled(true);

closeButton = new ToolStripButton();
closeButton.setPrompt( "Close" );
closeButton.setTitle( "Close" );
closeButton.setPadding(5);

toolStrip.addMember(saveButton);
toolStrip.addMember(closeButton);

layout.addMember(toolStrip);
layout.addMember(exampleGrid);

return layout;
}

class Attributes extends ListGridRecord {

public Attributes() {
}

public Attributes(String group, String property, String value) {
setGroup(group);
setProperty(property);
setValue(value);
}

public void setGroup(String group) {
setAttribute("group", group);
}

public String getGroup() {
return getAttributeAsString("group");
}

public void setProperty(String property) {
setAttribute("property", property);
}

public String getProperty() {
return getAttributeAsString("property");
}

public void setValue(String value) {
setAttribute("value", value);
}

public String getValue() {
return getAttributeAsString("value");
}

}

public class AttributesData {

private Attributes[] records;

public Attributes[] getRecords() {
if (records == null) {
records = getNewRecords();
}
return records;
}

private Attributes[] getNewRecords() {
return new Attributes[] {
new Attributes("Primary", "Name", "Name1"),
new Attributes("Primary", "Type", "Type1") };
}

}

}