Program: 118089
Project: 118089
Buggy source:
@Override protected void initialize(){
  FTPConnection conn=getConnection();
  ftpUsernameText.setText(conn.getUsername());
  ftpPasswordText.setText(conn.getValue(conn.getPassword(),false));
  ftpPortText.setText(conn.getPort());
  ftpHostText.setText(conn.getHost());
  encodeCombo.setText(conn.getEcoding());
  if (CUSTOM.equals(encodeCombo.getText())) {
    customText.setVisible(true);
  }
 else {
    customText.setVisible(false);
  }
  if (conn.getCustomEncode() == null) {
    customText.setText(ENCODING);
  }
 else {
    customText.setText(conn.getCustomEncode());
  }
  connModelCombo.setText(conn.getMode());
  if (conn.isSFTP()) {
    sftpChildComGridData.exclude=false;
    ftpsChildComGridData.exclude=true;
    sftpChildCom.setVisible(true);
    ftpsChildCom.setVisible(false);
    sftpChildCom.layout();
    ftpsChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
    connModelCombo.setEnabled(false);
    sftpSuppBut.setSelection(conn.isSFTP());
    methodCombo.setText(conn.getMethod());
    if (PUBLIC_KEY.equals(conn.getMethod())) {
      privatekeyText.setVisible(true);
      passphraseText.setVisible(true);
      privatekeyText.setText(conn.getPrivatekey() != null ? conn.getPrivatekey() : "String_Node_Str");
      passphraseText.setText(conn.getValue(conn.getPassphrase(),false));
    }
 else {
      privatekeyText.setVisible(false);
      passphraseText.setVisible(false);
    }
  }
 else {
    sftpChildComGridData.exclude=true;
    sftpChildCom.setVisible(false);
    sftpChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
  }
  if (conn.isFTPS()) {
    ftpsChildComGridData.exclude=false;
    sftpChildComGridData.exclude=true;
    sftpChildCom.setVisible(false);
    ftpsChildCom.setVisible(true);
    sftpChildCom.layout();
    ftpsChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
    connModelCombo.setEnabled(false);
    ftpsSuppBut.setSelection(conn.isFTPS());
    keyFileText.setText(conn.getKeystoreFile());
    keyPasswordText.setText(conn.getValue(conn.getKeystorePassword(),false));
  }
 else {
    ftpsChildComGridData.exclude=true;
    ftpsChildCom.setVisible(false);
    ftpsChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
  }
  if (conn.isUsesocks()) {
    proxyChildComGridData.exclude=false;
    proxyChildCom.setVisible(true);
    proxyChildCom.layout();
    proxyCom.layout();
    buildGroup.layout();
    this.layout();
    useSocksBut.setSelection(conn.isUsesocks());
    proxyHostText.setText(conn.getProxyhost());
    proxyPortText.setText(conn.getProxyport());
    proxyUsernameText.setText(conn.getProxyuser());
    proxyPasswordText.setText(conn.getValue(conn.getProxypassword(),false));
  }
 else {
    proxyChildComGridData.exclude=true;
    proxyChildCom.setVisible(false);
    proxyChildCom.layout();
    proxyCom.layout();
    buildGroup.layout();
    this.layout();
  }
}

Fixed version (ground truth):
@Override protected void initialize(){
  FTPConnection conn=getConnection();
  ftpUsernameText.setText(conn.getUsername());
  ftpPasswordText.setText(conn.getValue(conn.getPassword(),false));
  ftpPortText.setText(conn.getPort());
  ftpHostText.setText(conn.getHost());
  encodeCombo.setText(conn.getEcoding());
  if (CUSTOM.equals(encodeCombo.getText())) {
    customText.setVisible(true);
  }
 else {
    customText.setVisible(false);
  }
  if (conn.getCustomEncode() == null) {
    customText.setText(ENCODING);
  }
 else {
    customText.setText(conn.getCustomEncode());
  }
  connModelCombo.setText(conn.getMode());
  if (conn.isSFTP()) {
    fnEncodingBtn.setSelection(conn.isUseFileNameEncoding());
    sftpChildComGridData.exclude=false;
    ftpsChildComGridData.exclude=true;
    fnEncodingBtnGD.exclude=false;
    fnEncodingBtn.setVisible(true);
    sftpChildCom.setVisible(true);
    ftpsChildCom.setVisible(false);
    encodeCombo.setHideWidgets(!fnEncodingBtn.getSelection());
    encodingComp.layout();
    sftpChildCom.layout();
    ftpsChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
    connModelCombo.setEnabled(false);
    sftpSuppBut.setSelection(conn.isSFTP());
    methodCombo.setText(conn.getMethod());
    if (PUBLIC_KEY.equals(conn.getMethod())) {
      privatekeyText.setVisible(true);
      passphraseText.setVisible(true);
      privatekeyText.setText(conn.getPrivatekey() != null ? conn.getPrivatekey() : "String_Node_Str");
      passphraseText.setText(conn.getValue(conn.getPassphrase(),false));
    }
 else {
      privatekeyText.setVisible(false);
      passphraseText.setVisible(false);
    }
  }
 else {
    sftpChildComGridData.exclude=true;
    fnEncodingBtnGD.exclude=true;
    encodeCombo.setHideWidgets(false);
    fnEncodingBtn.setVisible(false);
    sftpChildCom.setVisible(false);
    sftpChildCom.layout();
    encodingComp.layout();
    tetsCom.layout();
    buildGroup.layout();
  }
  if (conn.isFTPS()) {
    ftpsChildComGridData.exclude=false;
    sftpChildComGridData.exclude=true;
    sftpChildCom.setVisible(false);
    ftpsChildCom.setVisible(true);
    sftpChildCom.layout();
    ftpsChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
    connModelCombo.setEnabled(false);
    ftpsSuppBut.setSelection(conn.isFTPS());
    keyFileText.setText(conn.getKeystoreFile());
    keyPasswordText.setText(conn.getValue(conn.getKeystorePassword(),false));
  }
 else {
    ftpsChildComGridData.exclude=true;
    ftpsChildCom.setVisible(false);
    ftpsChildCom.layout();
    tetsCom.layout();
    buildGroup.layout();
  }
  if (conn.isUsesocks()) {
    proxyChildComGridData.exclude=false;
    proxyChildCom.setVisible(true);
    proxyChildCom.layout();
    proxyCom.layout();
    buildGroup.layout();
    this.layout();
    useSocksBut.setSelection(conn.isUsesocks());
    proxyHostText.setText(conn.getProxyhost());
    proxyPortText.setText(conn.getProxyport());
    proxyUsernameText.setText(conn.getProxyuser());
    proxyPasswordText.setText(conn.getValue(conn.getProxypassword(),false));
  }
 else {
    proxyChildComGridData.exclude=true;
    proxyChildCom.setVisible(false);
    proxyChildCom.layout();
    proxyCom.layout();
    buildGroup.layout();
    this.layout();
  }
}