Add "Result comment" to quiz default settings

This is by design.

Quiz module is already preserving a huge pile of items, you can find them below. Comment and text format states are being handled by drupal core, I would suggest to use that.

function _quiz_get_node_defaults() {
  return array(
    'aid' => NULL,
    'number_of_random_questions' => 0,
    'max_score_for_random' => 1,
    'pass_rate' => 75,
    'summary_pass' => '',
    'summary_pass_format' => filter_fallback_format(),
    'summary_default' => '',
    'summary_default_format' => filter_fallback_format(),
    'randomization' => 0,
    'backwards_navigation' => 1,
    'repeat_until_correct' => 0,
    'feedback_time' => 0,
    'display_feedback' => 1,
    'quiz_open' => 0,
    'quiz_close' => 0,
    'takes' => 0,
    'show_attempt_stats' => 1,
    'keep_results' => 2,
    'time_limit' => 0,
    'quiz_always' => 1,
    'tid' => 0,
    'has_userpoints' => 0,
    'allow_skipping' => 1,
    'allow_resume' => 1,
    'allow_jumping' => 0,
    'show_passed' => 1,
    'quiz_open' => _quiz_form_prepare_date(),
    'quiz_close' => _quiz_form_prepare_date(NULL, variable_get('quiz_default_close', 30)),
    'mark_doubtful' => 0,
  );
}

Thanks for the follow up! This feature is not supported by quiz at the moment. We would like to treat this issue as new feature request. This is not a bug, default settings works as designed.

Please find the patch to save "Result Comments" on checking "Remember my settings" while saving quiz.