Users and Permissions Plugin: How to assign multiple roles to single end-user

I modified the user-role relation to ‘manyToMany’. But now when I have a user with multiple roles and I want to delete one the Strapi BackOffice throws an error:

{
  "data": null,
  "error": {
    "status": 400,
    "name": "ValidationError",
    "message": "Cannot remove role",
    "details": {
      "errors": [
        {
          "path": [
            "role",
            "disconnect"
          ],
          "message": "Cannot remove role",
          "name": "ValidationError"
        }
      ]
    }
  }
}

I use strapi version 4.8. Is there any solution? On newer versions it has been fixed?

Thanks