Program: 90816
Project: 90816
Buggy source:
private synchronized void selectTagSet(final TagSet tagSet){
  if (null == tagSet || !tagModel.getTagSetStructure().getTagSets().contains(tagSet))   return;
  inputMap.clear();
  actionMap.clear();
  final KeyStroke abortKey=KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE,0);
  final Action abortAction=new AbstractAction("String_Node_Str"){
    @Override public void actionPerformed(    final ActionEvent e){
      abort();
    }
    private static final long serialVersionUID=1L;
  }
;
  inputMap.put(abortKey,"String_Node_Str");
  actionMap.put("String_Node_Str",abortAction);
  final KeyStroke removeKey=KeyStroke.getKeyStroke(KeyEvent.VK_0,0);
  final Action removeAction=new AbstractAction("String_Node_Str"){
    @Override public void actionPerformed(    final ActionEvent e){
      removeLabels();
    }
    private static final long serialVersionUID=1L;
  }
;
  inputMap.put(removeKey,"String_Node_Str");
  actionMap.put("String_Node_Str",removeAction);
  final KeyStroke clearAllKey=KeyStroke.getKeyStroke(KeyEvent.VK_DELETE,KeyEvent.SHIFT_DOWN_MASK);
  final Action clearAllAction=new AbstractAction("String_Node_Str"){
    @Override public void actionPerformed(    final ActionEvent e){
      clearAllLabels();
    }
    private static final long serialVersionUID=1L;
  }
;
  inputMap.put(clearAllKey,"String_Node_Str");
  actionMap.put("String_Node_Str",clearAllAction);
  int i=1;
  for (  final Tag tag : tagSet.getTags()) {
    final String actionName="String_Node_Str" + i;
    final KeyStroke takKeyStroke=KeyStroke.getKeyStroke((char)('0' + i));
    final AbstractAction action=new AbstractAction(actionName){
      @Override public void actionPerformed(      final ActionEvent e){
        selectTag(tag);
      }
      private static final long serialVersionUID=1L;
    }
;
    inputMap.put(takKeyStroke,actionName);
    actionMap.put(actionName,action);
    i++;
  }
  bindings.addInputMap("String_Node_Str",inputMap);
  bindings.addActionMap("String_Node_Str",actionMap);
  this.tagSet=tagSet;
  mode=Mode.PICK_TAG;
  panel.repaint();
}

Fixed version (ground truth):
private synchronized void selectTagSet(final TagSet tagSet){
  if (null == tagSet || !tagModel.getTagSetStructure().getTagSets().contains(tagSet))   return;
  inputMap.clear();
  actionMap.clear();
  final KeyStroke abortKey=KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE,0);
  final Action abortAction=new AbstractAction("String_Node_Str"){
    @Override public void actionPerformed(    final ActionEvent e){
      abort();
    }
    private static final long serialVersionUID=1L;
  }
;
  inputMap.put(abortKey,"String_Node_Str");
  actionMap.put("String_Node_Str",abortAction);
  final KeyStroke removeKey=KeyStroke.getKeyStroke(KeyEvent.VK_0,0);
  final Action removeAction=new AbstractAction("String_Node_Str"){
    @Override public void actionPerformed(    final ActionEvent e){
      removeLabels();
    }
    private static final long serialVersionUID=1L;
  }
;
  inputMap.put(removeKey,"String_Node_Str");
  actionMap.put("String_Node_Str",removeAction);
  final KeyStroke clearAllKey=KeyStroke.getKeyStroke(KeyEvent.VK_DELETE,KeyEvent.SHIFT_DOWN_MASK);
  final Action clearAllAction=new AbstractAction("String_Node_Str"){
    @Override public void actionPerformed(    final ActionEvent e){
      clearAllLabels();
    }
    private static final long serialVersionUID=1L;
  }
;
  inputMap.put(clearAllKey,"String_Node_Str");
  actionMap.put("String_Node_Str",clearAllAction);
  int i=1;
  for (  final Tag tag : tagSet.getTags()) {
    final String actionName="String_Node_Str" + i;
    final KeyStroke takKeyStroke=KeyStroke.getKeyStroke((char)('0' + i));
    final AbstractAction action=new AbstractAction(actionName){
      @Override public void actionPerformed(      final ActionEvent e){
        selectTag(tag);
      }
      private static final long serialVersionUID=1L;
    }
;
    inputMap.put(takKeyStroke,actionName);
    actionMap.put(actionName,action);
    i++;
  }
  bindings.addInputMap(PICK_TAGS_MAP,inputMap);
  bindings.addActionMap(PICK_TAGS_MAP,actionMap);
  this.tagSet=tagSet;
  mode=Mode.PICK_TAG;
  panel.repaint();
}