DynamicForm setStopOnError(true) not working

[rubalsher]

I am using SmartGWT version 3.0p with FF 16.0.
I have a DynamicForm with some TextItem objects on it that I am setting some validations on. If there is a validation error, I want to prevent the user from moving about on the screen or clicking anything else unless he first fixes the validation error. I am using setStopOnError(true) but it does not seem to be working.
Please note I have another screen with a ListGrid and setStopOnError seems to work fine there for ListGridField objects for which similar validations have been set.

Please help me in understanding why this is not working. I am attaching the complete Java code.

import com.smartgwt.client.widgets.form.DynamicForm;  
import com.smartgwt.client.widgets.form.fields.TextItem;
import com.smartgwt.client.widgets.form.validator.IntegerRangeValidator;
import com.smartgwt.client.widgets.layout.VLayout;  
  
import com.google.gwt.core.client.EntryPoint;  
  
public class testGWT implements EntryPoint {  
        
    public void onModuleLoad() {
        IntegerRangeValidator irv = new IntegerRangeValidator();
        irv.setMin(0);
        irv.setMax(10);

        TextItem min = new TextItem("Min", "Min");
        min.setValidators(irv);
        min.setValidateOnChange(true);
        TextItem max = new TextItem("Max", "Max");

        DynamicForm df = new DynamicForm();
        df.setWidth(300);
        df.setNumCols(2);
        df.setWrapItemTitles(false);
        df.setItems(min, max);
        df.setValidateOnChange(true);
        df.setStopOnError(true);

        VLayout vLayout = new VLayout();  
        vLayout.setMembersMargin(10);  
        vLayout.addMember(df);  
        vLayout.draw();  
    }
}

In the above example, I do not want the user to be able to do anything else unless he fixes a validation error on the "Min" field if the user enters a value outside 0-10. I am however able to focus on "Max" field even if there is a validation error.