Program: 188207
Project: 188207
Buggy source:
public void viewAction(){
  IndexedPreservationEvent event=bundle.getEvent();
  eventIdValue.setText(event.getId());
  eventTypeLabel.setText(event.getEventType());
  eventDetailLabel.setText(event.getEventDetail());
  eventDatetimeLabel.setText(DateTimeFormat.getFormat(RodaConstants.DEFAULT_DATETIME_FORMAT).format(event.getEventDateTime()));
  Map<String,IndexedPreservationAgent> agents=bundle.getAgents();
  boolean hasAgents=false;
  for (  LinkingIdentifier agentId : event.getLinkingAgentIds()) {
    IndexedPreservationAgent agent=agents.get(agentId.getValue());
    if (agent != null) {
      FlowPanel layout=createAgentPanel(agentId,agent);
      agentsPanel.add(layout);
      hasAgents=true;
    }
  }
  agentsHeader.setVisible(hasAgents);
  boolean showSourceObjects=false;
  for (  LinkingIdentifier sourceObjectId : event.getSourcesObjectIds()) {
    if (sourceObjectId.getRoles() != null && sourceObjectId.getRoles().contains(RodaConstants.PRESERVATION_LINKING_OBJECT_SOURCE)) {
      addObjectPanel(sourceObjectId,bundle,sourceObjectsPanel);
      showSourceObjects=true;
    }
  }
  sourceObjectsHeader.setVisible(showSourceObjects);
  sourceObjectsPanel.setVisible(showSourceObjects);
  boolean showOutcomeObjects=false;
  for (  LinkingIdentifier outcomeObjectId : event.getOutcomeObjectIds()) {
    if (outcomeObjectId.getRoles() != null && outcomeObjectId.getRoles().contains(RodaConstants.PRESERVATION_LINKING_OBJECT_OUTCOME)) {
      addObjectPanel(outcomeObjectId,bundle,outcomeObjectsPanel);
      showOutcomeObjects=true;
    }
  }
  outcomeObjectsHeader.setVisible(showOutcomeObjects);
  outcomeObjectsPanel.setVisible(showOutcomeObjects);
  PluginState eventOutcome=PluginState.valueOf(event.getEventOutcome());
  eventOutcomeLabel.setText(messages.pluginStateMessage(eventOutcome));
  if (PluginState.SUCCESS.equals(eventOutcome)) {
    eventOutcomeLabel.setStyleName("String_Node_Str");
  }
 else   if (PluginState.FAILURE.equals(eventOutcome)) {
    eventOutcomeLabel.setStyleName("String_Node_Str");
  }
 else   if (PluginState.PARTIAL_SUCCESS.equals(eventOutcome)) {
    eventOutcomeLabel.setStyleName("String_Node_Str");
  }
  getEventDetailsHTML(new AsyncCallback<SafeHtml>(){
    @Override public void onFailure(    Throwable caught){
      if (!AsyncCallbackUtils.treatCommonFailures(caught)) {
        Toast.showError(messages.errorLoadingPreservationEventDetails(caught.getMessage()));
      }
    }
    @Override public void onSuccess(    SafeHtml result){
      eventOutcomeDetails.setHTML(result);
      outcomeDetailHeader.setVisible(result.asString().length() > 0);
    }
  }
);
}

Fixed version (ground truth):
public void viewAction(){
  IndexedPreservationEvent event=bundle.getEvent();
  eventIdValue.setText(event.getId());
  eventTypeLabel.setText(event.getEventType());
  eventDetailLabel.setText(event.getEventDetail());
  eventDatetimeLabel.setText(Humanize.formatDateTime(event.getEventDateTime()));
  Map<String,IndexedPreservationAgent> agents=bundle.getAgents();
  boolean hasAgents=false;
  for (  LinkingIdentifier agentId : event.getLinkingAgentIds()) {
    IndexedPreservationAgent agent=agents.get(agentId.getValue());
    if (agent != null) {
      FlowPanel layout=createAgentPanel(agentId,agent);
      agentsPanel.add(layout);
      hasAgents=true;
    }
  }
  agentsHeader.setVisible(hasAgents);
  boolean showSourceObjects=false;
  for (  LinkingIdentifier sourceObjectId : event.getSourcesObjectIds()) {
    if (sourceObjectId.getRoles() != null && sourceObjectId.getRoles().contains(RodaConstants.PRESERVATION_LINKING_OBJECT_SOURCE)) {
      addObjectPanel(sourceObjectId,bundle,sourceObjectsPanel);
      showSourceObjects=true;
    }
  }
  sourceObjectsHeader.setVisible(showSourceObjects);
  sourceObjectsPanel.setVisible(showSourceObjects);
  boolean showOutcomeObjects=false;
  for (  LinkingIdentifier outcomeObjectId : event.getOutcomeObjectIds()) {
    if (outcomeObjectId.getRoles() != null && outcomeObjectId.getRoles().contains(RodaConstants.PRESERVATION_LINKING_OBJECT_OUTCOME)) {
      addObjectPanel(outcomeObjectId,bundle,outcomeObjectsPanel);
      showOutcomeObjects=true;
    }
  }
  outcomeObjectsHeader.setVisible(showOutcomeObjects);
  outcomeObjectsPanel.setVisible(showOutcomeObjects);
  PluginState eventOutcome=PluginState.valueOf(event.getEventOutcome());
  eventOutcomeLabel.setText(messages.pluginStateMessage(eventOutcome));
  if (PluginState.SUCCESS.equals(eventOutcome)) {
    eventOutcomeLabel.setStyleName("String_Node_Str");
  }
 else   if (PluginState.FAILURE.equals(eventOutcome)) {
    eventOutcomeLabel.setStyleName("String_Node_Str");
  }
 else   if (PluginState.PARTIAL_SUCCESS.equals(eventOutcome)) {
    eventOutcomeLabel.setStyleName("String_Node_Str");
  }
  getEventDetailsHTML(new AsyncCallback<SafeHtml>(){
    @Override public void onFailure(    Throwable caught){
      if (!AsyncCallbackUtils.treatCommonFailures(caught)) {
        Toast.showError(messages.errorLoadingPreservationEventDetails(caught.getMessage()));
      }
    }
    @Override public void onSuccess(    SafeHtml result){
      eventOutcomeDetails.setHTML(result);
      outcomeDetailHeader.setVisible(result.asString().length() > 0);
    }
  }
);
}