Duplicated validation error messages

Vaadin 6 / 7 / 8 Framework Data Binding
1

Hi,
I implemented custom validator and added it to one of my components


myOptionGroup.addValidator(new AbstractValidator("My error message") {

				@Override
				public boolean isValid(Object value) {
					return "123" != value;
				}
			});

I have a two problem wih it.

  1. When I use setImmediate on my components then I get duplicated error messages on form. Other validations are ok.
  2. When I I call validate() on this field I get InvalidValueException with empty error message; e.getMessage() return null.

What could be wrong?

Vaadin 6.7.4