Program: 61712
Project: 61712
Buggy source:
public UsageFrame(List<ABCContainerTag> abcTags,ABC abc,int multinameIndex,ABCPanel abcPanel,boolean definitions){
  this.abcPanel=abcPanel;
  List<MultinameUsage> usages=definitions ? abc.findMultinameDefinition(abcTags,multinameIndex) : abc.findMultinameUsage(abcTags,multinameIndex);
  Multiname m=abc.constants.constant_multiname.get(multinameIndex);
  if (m.namespace_index > 0 && abc.constants.constant_namespace.get(m.namespace_index).kind != Namespace.KIND_PRIVATE) {
    for (    ABCContainerTag at : abcTags) {
      ABC a=at.getABC();
      if (a == abc) {
        continue;
      }
      int mid=a.constants.getMultinameId(m,false);
      if (mid > 0) {
        usages.addAll(definitions ? a.findMultinameDefinition(abcTags,mid) : a.findMultinameUsage(abcTags,mid));
      }
    }
  }
  usageListModel=new UsageListModel();
  for (  MultinameUsage u : usages) {
    usageListModel.addElement(u);
  }
  usageList=new JList<>(usageListModel);
  usageList.setBackground(Color.white);
  gotoButton.setActionCommand(ACTION_GOTO);
  gotoButton.addActionListener(this);
  cancelButton.setActionCommand(ACTION_CANCEL);
  cancelButton.addActionListener(this);
  JPanel buttonsPanel=new JPanel();
  buttonsPanel.setLayout(new FlowLayout());
  buttonsPanel.add(gotoButton);
  buttonsPanel.add(cancelButton);
  usageList.addMouseListener(this);
  Container cont=getContentPane();
  cont.setLayout(new BorderLayout());
  cont.add(new JScrollPane(usageList),BorderLayout.CENTER);
  cont.add(buttonsPanel,BorderLayout.SOUTH);
  setSize(400,300);
  setTitle((definitions ? translate("String_Node_Str") : translate("String_Node_Str")) + abc.constants.getMultiname(multinameIndex).getNameWithNamespace(abc.constants));
  View.centerScreen(this);
  View.setWindowIcon(this);
}

Fixed version (ground truth):
public UsageFrame(List<ABCContainerTag> abcTags,ABC abc,int multinameIndex,ABCPanel abcPanel,boolean definitions){
  super(abcPanel.getMainPanel().getMainFrame().getWindow());
  this.abcPanel=abcPanel;
  List<MultinameUsage> usages=definitions ? abc.findMultinameDefinition(abcTags,multinameIndex) : abc.findMultinameUsage(abcTags,multinameIndex);
  Multiname m=abc.constants.constant_multiname.get(multinameIndex);
  if (m.namespace_index > 0 && abc.constants.constant_namespace.get(m.namespace_index).kind != Namespace.KIND_PRIVATE) {
    for (    ABCContainerTag at : abcTags) {
      ABC a=at.getABC();
      if (a == abc) {
        continue;
      }
      int mid=a.constants.getMultinameId(m,false);
      if (mid > 0) {
        usages.addAll(definitions ? a.findMultinameDefinition(abcTags,mid) : a.findMultinameUsage(abcTags,mid));
      }
    }
  }
  usageListModel=new UsageListModel();
  for (  MultinameUsage u : usages) {
    usageListModel.addElement(u);
  }
  usageList=new JList<>(usageListModel);
  usageList.setBackground(Color.white);
  gotoButton.setActionCommand(ACTION_GOTO);
  gotoButton.addActionListener(this);
  cancelButton.setActionCommand(ACTION_CANCEL);
  cancelButton.addActionListener(this);
  JPanel buttonsPanel=new JPanel();
  buttonsPanel.setLayout(new FlowLayout());
  buttonsPanel.add(gotoButton);
  buttonsPanel.add(cancelButton);
  usageList.addMouseListener(this);
  Container cont=getContentPane();
  cont.setLayout(new BorderLayout());
  cont.add(new JScrollPane(usageList),BorderLayout.CENTER);
  cont.add(buttonsPanel,BorderLayout.SOUTH);
  setSize(400,300);
  setTitle((definitions ? translate("String_Node_Str") : translate("String_Node_Str")) + abc.constants.getMultiname(multinameIndex).getNameWithNamespace(abc.constants));
  View.centerScreen(this);
  View.setWindowIcon(this);
}