Program: 136751
Project: 136751
Buggy source:
@Override public void postWindowOpen(){
  this.getWindowConfigurer().getWindow().getShell().setMaximized(true);
  super.postWindowOpen();
  ChangePerspectiveAction.getAction().switchTitle();
  ITDQRepositoryService tdqRepositoryService=(ITDQRepositoryService)org.talend.core.GlobalServiceRegister.getDefault().getService(ITDQRepositoryService.class);
  if (tdqRepositoryService != null) {
    tdqRepositoryService.addPartListener();
    tdqRepositoryService.addSoftwareSystemUpdateListener();
  }
  IWorkbenchWindowConfigurer workbenchWindowConfigurer=getWindowConfigurer();
  PreferenceManager preferenceManager=workbenchWindowConfigurer.getWindow().getWorkbench().getPreferenceManager();
  preferenceManager.remove("String_Node_Str" + WorkbenchPlugin.PREFERENCE_PAGE_CATEGORY_SEPARATOR + "String_Node_Str");
  IActionBarConfigurer actionBarConfigurer=workbenchWindowConfigurer.getActionBarConfigurer();
  ICoolBarManager coolBarManager=actionBarConfigurer.getCoolBarManager();
  IContributionItem toolBarItem=coolBarManager.find("String_Node_Str");
  if (toolBarItem != null) {
    coolBarManager.remove(toolBarItem);
  }
  IMenuManager menuManager=actionBarConfigurer.getMenuManager();
  IContributionItem[] menuItems=menuManager.getItems();
  for (  IContributionItem menuItem : menuItems) {
    if ("String_Node_Str".equals(menuItem.getId()) || "String_Node_Str".equals(menuItem.getId())) {
      menuManager.remove(menuItem);
    }
  }
  IWorkbenchPage activePage=PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
  if (activePage != null) {
    if (CheatSheetUtils.getInstance().isFirstTime() && activePage.getPerspective().getId().equals(ProductUtils.PERSPECTIVE_DQ_ID)) {
      CheatSheetUtils.getInstance().findAndmaxDisplayCheatSheet();
    }
  }
}

Fixed version (ground truth):
@Override public void postWindowOpen(){
  this.getWindowConfigurer().getWindow().getShell().setMaximized(true);
  super.postWindowOpen();
  ChangePerspectiveAction.getAction().switchTitle();
  ITDQRepositoryService tdqRepositoryService=(ITDQRepositoryService)org.talend.core.GlobalServiceRegister.getDefault().getService(ITDQRepositoryService.class);
  if (tdqRepositoryService != null) {
    tdqRepositoryService.addPartListener();
    tdqRepositoryService.addSoftwareSystemUpdateListener();
  }
  IWorkbenchWindowConfigurer workbenchWindowConfigurer=getWindowConfigurer();
  PreferenceManager preferenceManager=workbenchWindowConfigurer.getWindow().getWorkbench().getPreferenceManager();
  preferenceManager.remove("String_Node_Str" + WorkbenchPlugin.PREFERENCE_PAGE_CATEGORY_SEPARATOR + "String_Node_Str");
  IActionBarConfigurer actionBarConfigurer=workbenchWindowConfigurer.getActionBarConfigurer();
  ICoolBarManager coolBarManager=actionBarConfigurer.getCoolBarManager();
  IContributionItem toolBarItem=coolBarManager.find("String_Node_Str");
  if (toolBarItem != null) {
    coolBarManager.remove(toolBarItem);
  }
  IMenuManager menuManager=actionBarConfigurer.getMenuManager();
  IContributionItem[] menuItems=menuManager.getItems();
  for (  IContributionItem menuItem : menuItems) {
    if ("String_Node_Str".equals(menuItem.getId()) || "String_Node_Str".equals(menuItem.getId())) {
      menuManager.remove(menuItem);
    }
  }
  IWorkbenchPage activePage=PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
  if (activePage != null) {
    if (CheatSheetUtils.getInstance().isFirstTime() && activePage.getPerspective().getId().equals(ProductUtils.PERSPECTIVE_DQ_ID)) {
      CheatSheetUtils.getInstance().findAndmaxDisplayCheatSheet("String_Node_Str");
    }
  }
}