Program: 62757
Project: 62757
Buggy source:
/** 
 * Builds response rows for a given question. This not only builds response rows for existing responses, but includes  the missing responses between pairs of givers and recipients.
 * @param question
 * @param responses  existing responses for the question
 * @see configureResponseRowForViewType
 */
private List<InstructorFeedbackResultsResponseRow> buildResponseRowsForQuestion(FeedbackQuestionAttributes question,List<FeedbackResponseAttributes> responses){
  List<InstructorFeedbackResultsResponseRow> responseRows=new ArrayList<InstructorFeedbackResultsResponseRow>();
  List<String> possibleGiversWithoutResponses=bundle.getPossibleGivers(question);
  List<String> possibleReceiversWithoutResponsesForGiver=new ArrayList<String>();
  String prevGiver="String_Node_Str";
  for (  FeedbackResponseAttributes response : responses) {
    if (!bundle.isGiverVisible(response) || !bundle.isRecipientVisible(response)) {
      possibleGiversWithoutResponses.clear();
      possibleReceiversWithoutResponsesForGiver.clear();
    }
    removeParticipantIdentifierFromList(question.giverType,possibleGiversWithoutResponses,response.giverEmail);
    boolean isNewGiver=!prevGiver.equals(response.giverEmail);
    if (isNewGiver) {
      responseRows.addAll(buildMissingResponseRowsBetweenGiverAndPossibleRecipients(question,possibleReceiversWithoutResponsesForGiver,prevGiver,bundle.getNameForEmail(prevGiver),bundle.getTeamNameForEmail(prevGiver)));
      String giverIdentifier=(question.giverType == FeedbackParticipantType.TEAMS) ? bundle.getFullNameFromRoster(response.giverEmail) : response.giverEmail;
      possibleReceiversWithoutResponsesForGiver=bundle.getPossibleRecipients(question,giverIdentifier);
    }
    removeParticipantIdentifierFromList(question.recipientType,possibleReceiversWithoutResponsesForGiver,response.recipientEmail);
    prevGiver=response.giverEmail;
    InstructorFeedbackResultsModerationButton moderationButton=bundle.isGiverVisible(response) ? buildModerationButtonForExistingResponse(question,response) : null;
    InstructorFeedbackResultsResponseRow responseRow=new InstructorFeedbackResultsResponseRow(bundle.getGiverNameForResponse(question,response),bundle.getTeamNameForEmail(response.giverEmail),bundle.getRecipientNameForResponse(question,response),bundle.getTeamNameForEmail(response.recipientEmail),bundle.getResponseAnswerHtml(response,question),moderationButton);
    configureResponseRow(question,prevGiver,response.recipientEmail,responseRow);
    responseRows.add(responseRow);
  }
  responseRows.addAll(getRemainingMissingResponseRows(question,possibleGiversWithoutResponses,possibleReceiversWithoutResponsesForGiver,prevGiver,viewType));
  return responseRows;
}

Fixed version (ground truth):
/** 
 * Builds response rows for a given question. This not only builds response rows for existing responses, but includes  the missing responses between pairs of givers and recipients.
 * @param question
 * @param responses  existing responses for the question
 * @see configureResponseRowForViewType
 */
private List<InstructorFeedbackResultsResponseRow> buildResponseRowsForQuestion(FeedbackQuestionAttributes question,List<FeedbackResponseAttributes> responses){
  List<InstructorFeedbackResultsResponseRow> responseRows=new ArrayList<InstructorFeedbackResultsResponseRow>();
  List<String> possibleGiversWithoutResponses=bundle.getPossibleGivers(question);
  List<String> possibleReceiversWithoutResponsesForGiver=new ArrayList<String>();
  String prevGiver="String_Node_Str";
  for (  FeedbackResponseAttributes response : responses) {
    if (!bundle.isGiverVisible(response) || !bundle.isRecipientVisible(response)) {
      possibleGiversWithoutResponses.clear();
      possibleReceiversWithoutResponsesForGiver.clear();
    }
    removeParticipantIdentifierFromList(question.giverType,possibleGiversWithoutResponses,response.giverEmail);
    boolean isNewGiver=!prevGiver.equals(response.giverEmail);
    if (isNewGiver) {
      responseRows.addAll(buildMissingResponseRowsBetweenGiverAndPossibleRecipients(question,possibleReceiversWithoutResponsesForGiver,prevGiver,bundle.getNameForEmail(prevGiver),bundle.getTeamNameForEmail(prevGiver)));
      String giverIdentifier=(question.giverType == FeedbackParticipantType.TEAMS) ? bundle.getFullNameFromRoster(response.giverEmail) : response.giverEmail;
      possibleReceiversWithoutResponsesForGiver=bundle.getPossibleRecipients(question,giverIdentifier);
    }
    removeParticipantIdentifierFromList(question.recipientType,possibleReceiversWithoutResponsesForGiver,response.recipientEmail);
    prevGiver=response.giverEmail;
    InstructorFeedbackResultsModerationButton moderationButton=bundle.isGiverVisible(response) ? buildModerationButtonForExistingResponse(question,response) : null;
    InstructorFeedbackResultsResponseRow responseRow=new InstructorFeedbackResultsResponseRow(bundle.getGiverNameForResponse(response),bundle.getTeamNameForEmail(response.giverEmail),bundle.getRecipientNameForResponse(response),bundle.getTeamNameForEmail(response.recipientEmail),bundle.getResponseAnswerHtml(response,question),moderationButton);
    configureResponseRow(question,prevGiver,response.recipientEmail,responseRow);
    responseRows.add(responseRow);
  }
  responseRows.addAll(getRemainingMissingResponseRows(question,possibleGiversWithoutResponses,possibleReceiversWithoutResponsesForGiver,prevGiver,viewType));
  return responseRows;
}