Incorrect return value in views_break_phrase() if find errors

function views_break_phrase() {
  // ...
  // Keep an 'error' value if invalid strings were given.
  if (!empty($str) && (empty($filter->value) || !is_array($filter->value))) {
    $filter->value = array(-1);
    return $filter;
  }
  // ...
}

Method views_plugin_argument_validate_node::validate_argument()
and
method views_handler_argument_term_node_tid_depth::query()
check the return value as fallow:

$tids = views_break_phrase($argument, $tids);
if ($tids->value == -1) {
  return FALSE;
}