As a workaround, can you try this:

var grIncident = new GlideRecord('incident');
if (grIncident.get(current.sys_id)) {
    grIncident.work_notes = "Standard Change  created";
    grIncident.state = -5;
    grIncident.u_pending_reason = "Pending Change Request";
    grIncident.update();
}

action.setRedirectURL(new StdChangeUtils().getURLForTask(current, 'rfc'));