Program: 40820
Project: 40820
Buggy source:
@Override public void run(){
  removeAll();
  mContentContainer.removeAll();
  add(new JLabel("String_Node_Str"));
  if (channels.isEmpty()) {
    add(new JLabel("String_Node_Str"));
  }
  add(Box.createRigidArea(new Dimension(0,5)));
  add(mContentContainer);
  for (  final short channelId : channels) {
    Set<String> subscribers=mChannelSubscriptionListener.getSubscribersOfChannel(channelId);
    JLabel comp=new JLabel("String_Node_Str" + channelId + "String_Node_Str"+ subscribers.size()+ "String_Node_Str");
    JButton subscribeButton=new JButton("String_Node_Str");
    subscribeButton.setBorder(BorderFactory.createRaisedBevelBorder());
    subscribeButton.setToolTipText("String_Node_Str");
    subscribeButton.addActionListener(new ActionListener(){
      @Override public void actionPerformed(      ActionEvent e){
        if (mBlaubotKingdom != null) {
          IBlaubotChannel chan=mBlaubotKingdom.getChannelManager().createOrGetChannel(channelId);
          chan.subscribe();
        }
      }
    }
);
    JButton unsubscribeButton=new JButton("String_Node_Str");
    unsubscribeButton.setToolTipText("String_Node_Str");
    unsubscribeButton.setBorder(BorderFactory.createRaisedBevelBorder());
    unsubscribeButton.addActionListener(new ActionListener(){
      @Override public void actionPerformed(      ActionEvent e){
        if (mBlaubotKingdom != null) {
          IBlaubotChannel chan=mBlaubotKingdom.getChannelManager().createOrGetChannel(channelId);
          chan.unsubscribe();
        }
      }
    }
);
    JPanel buttonPanel=new JPanel();
    buttonPanel.setLayout(new FlowLayout());
    subscribeButton.setMargin(new java.awt.Insets(1,1,1,1));
    unsubscribeButton.setMargin(new java.awt.Insets(1,1,1,1));
    buttonPanel.add(subscribeButton);
    buttonPanel.add(unsubscribeButton);
    JPanel panel=new JPanel();
    panel.setAlignmentX(Component.LEFT_ALIGNMENT);
    panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));
    panel.add(Box.createRigidArea(new Dimension(5,0)));
    panel.add(comp);
    panel.add(buttonPanel);
    panel.setToolTipText("String_Node_Str" + subscribers);
    mContentContainer.add(panel);
  }
  updateUI();
}

Fixed version (ground truth):
@Override public void run(){
  removeAll();
  mContentContainer.removeAll();
  add(new JLabel("String_Node_Str"));
  if (channels.isEmpty()) {
    add(new JLabel("String_Node_Str"));
  }
  add(Box.createRigidArea(new Dimension(0,5)));
  add(mContentContainer);
  for (  final short channelId : channels) {
    Set<String> subscribers=mChannelSubscriptionListener.getSubscribersOfChannel(channelId);
    JLabel comp=new JLabel("String_Node_Str" + channelId + "String_Node_Str"+ subscribers.size()+ "String_Node_Str");
    JButton subscribeButton=new JButton("String_Node_Str");
    subscribeButton.setBorder(BorderFactory.createRaisedBevelBorder());
    subscribeButton.setToolTipText("String_Node_Str");
    subscribeButton.addActionListener(new ActionListener(){
      @Override public void actionPerformed(      ActionEvent e){
        if (mBlaubotChannelManager != null) {
          IBlaubotChannel chan=mBlaubotChannelManager.createOrGetChannel(channelId);
          chan.subscribe();
        }
      }
    }
);
    JButton unsubscribeButton=new JButton("String_Node_Str");
    unsubscribeButton.setToolTipText("String_Node_Str");
    unsubscribeButton.setBorder(BorderFactory.createRaisedBevelBorder());
    unsubscribeButton.addActionListener(new ActionListener(){
      @Override public void actionPerformed(      ActionEvent e){
        if (mBlaubotChannelManager != null) {
          IBlaubotChannel chan=mBlaubotChannelManager.createOrGetChannel(channelId);
          chan.unsubscribe();
        }
      }
    }
);
    JPanel buttonPanel=new JPanel();
    buttonPanel.setLayout(new FlowLayout());
    subscribeButton.setMargin(new java.awt.Insets(1,1,1,1));
    unsubscribeButton.setMargin(new java.awt.Insets(1,1,1,1));
    buttonPanel.add(subscribeButton);
    buttonPanel.add(unsubscribeButton);
    JPanel panel=new JPanel();
    panel.setAlignmentX(Component.LEFT_ALIGNMENT);
    panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));
    panel.add(Box.createRigidArea(new Dimension(5,0)));
    panel.add(comp);
    panel.add(buttonPanel);
    panel.setToolTipText("String_Node_Str" + subscribers);
    mContentContainer.add(panel);
  }
  updateUI();
}