Email "www.foo.bar.baz@#" is valid?

[dadscript]

<?php

use Egulias\EmailValidator\EmailValidator;
use Egulias\EmailValidator\Validation\RFCValidation;

$validator = new EmailValidator();

//  "egulias/email-validator": "2.1.25"
$validator->isValid('www.foo.bar.baz@#', new RFCValidation()); //true

//  "egulias/email-validator": "3.1.2"
$validator->isValid('www.foo.bar.baz@#', new RFCValidation()); //false

HTML5 validator is saying also that www.foo.bar.baz@# is wrong.