Using Namespace: Joomla\CMS\User\UserHelper
the function UserHelper::removeUserFromGroup
simply does not work

Steps to reproduce the issue

1. create a group, get groupId
2. create a user, get userId
3. add user to group
4. try to remove user from group using:
   UserHelper::removeUserFromGroup($userId, $groupId)

Expected result

The User would be removed from the group

Actual result

The user is not removed from the group

System information (as much as possible)

Ubuntu 20.04.1 LTS
Apache 2.4.41
PHP 7.4.3
Joomla 4.0 beta 3

Additional comments

The following custom function I wrote works:
private function removeUserFromGroup($userId, $groupId){
$user = User::getInstance($userId);
// $user = new User($userId);
// $user->load($userId);
$userGrps = Access::getGroupsByUser($userId, false);

unset($userGrps[array_search($groupId, $userGrps)]);

$user->groups = $userGrps;
$user->save();

// Store the data.
if (!$user->save())
{
    $this->setError($user->getError());
    
    return false;
}
return $user->id;

}

Thank you!