When I use Pdo Storage together with option "use_jwt_access_tokens", the generated access tokens are very long but the database field "access_token" in table "oauth_access_tokens" can handle just 40 characters (see https://bshaffer.github.io/oauth2-server-php-docs/cookbook/).

$storage = new OAuth2\Storage\Pdo($pdo);
$server = new \OAuth2\Server($storage, [
  'use_jwt_access_tokens' => true,
]);

Did I configure something wrong?
Or do I have to change field "access_tokens" to type "text" and remove the primary key?