http://vat-rates/graphql/internal (Works with 4.4.31)
http://vat-rates/graphql/internal (Rejected with 4.4.33)

<?php

declare(strict_types=1);

require_once __DIR__.'/vendor/autoload.php';

use Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Validation;

$wrongUrl = 'http://vat-rates/graphql/internal';
$urlValidator = Validation::createValidator();
$urlConstraint = new Constraints\Url();

var_dump($urlValidator->validate($wrongUrl, $urlConstraint)->count());

4.4.31
php test.php                  
int(0)

4.4.33
php test.php
int(1)