Program: 62336
Project: 62336
Buggy source:
public void initializeEditorContextMenus(){
  webView.setContextMenuEnabled(false);
  this.contextMenu=new ContextMenu();
  this.contextMenu.setAutoFix(true);
  this.contextMenu.setAutoHide(true);
  MenuItem cut=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.cutCopy(editorSelection());
    execCommand("String_Node_Str");
  }
);
  MenuItem copy=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.cutCopy(editorSelection());
  }
);
  MenuItem paste=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.paste();
  }
);
  MenuItem pasteRaw=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.pasteRaw();
  }
);
  MenuItem indexSelection=MenuItemBuilt.item("String_Node_Str").click(e -> {
    shortcutProvider.getProvider().addIndexSelection();
  }
);
  MenuItem includeAsSubDocument=MenuItemBuilt.item("String_Node_Str").click(e -> {
    shortcutProvider.getProvider().includeAsSubdocument();
  }
);
  MenuItem replacements=MenuItemBuilt.item("String_Node_Str").click(this::replaceSubs);
  MenuItem markdownToAsciidoc=MenuItemBuilt.item("String_Node_Str").click(e -> {
    MarkdownService markdownService=applicationContext.getBean(MarkdownService.class);
    markdownService.convertToAsciidoc(getEditorValue(),content -> threadService.runActionLater(() -> {
      tabService.newDoc(content);
    }
));
  }
);
  final Menu editorLanguage=new Menu("String_Node_Str");
  final Menu defaultLanguage=new Menu("String_Node_Str");
  ToggleGroup editorLanguageGroup=new ToggleGroup();
  ToggleGroup defaultLanguageGroup=new ToggleGroup();
  final RadioMenuItem disableSpeller=CheckItemBuilt.check("String_Node_Str",false).bindBi(spellcheckConfigBean.disableSpellCheckProperty()).click(e -> {
    checkSpelling();
  }
).build();
  Menu languageMenu=new Menu("String_Node_Str");
  languageMenu.getItems().addAll(editorLanguage,defaultLanguage,disableSpeller);
  EventHandler<ContextMenuEvent> contextMenuRequested=event -> {
    final ObservableList<MenuItem> contextMenuItems=contextMenu.getItems();
    final List<MenuItem> menuItems=Arrays.asList(cut,copy,paste,pasteRaw,markdownToAsciidoc,replacements,indexSelection,includeAsSubDocument,languageMenu);
    for (    MenuItem menuItem : menuItems) {
      if (!contextMenuItems.contains(menuItem)) {
        contextMenuItems.add(menuItem);
      }
    }
    if (editorLanguage.getItems().isEmpty()) {
      editorLanguage.getItems().add(CheckItemBuilt.check("String_Node_Str",true).click(e -> {
        setSpellLanguage(null);
        checkSpelling();
      }
).group(editorLanguageGroup).build());
      final ObservableList<Path> languages=spellcheckConfigBean.getLanguages();
      for (      Path language : languages) {
        final String pathCleanName=IOHelper.getPathCleanName(language);
        editorLanguage.getItems().add(CheckItemBuilt.check(pathCleanName,false).click(e -> {
          setSpellLanguage(language);
          checkSpelling();
        }
).group(editorLanguageGroup).build());
        defaultLanguage.getItems().add(CheckItemBuilt.check(pathCleanName,spellcheckConfigBean.defaultLanguageProperty().isEqualTo(language).get()).click(e -> {
          spellcheckConfigBean.setDefaultLanguage(language);
          checkSpelling();
        }
).group(defaultLanguageGroup).build());
      }
    }
    if (contextMenu.isShowing()) {
      contextMenu.hide();
    }
    markdownToAsciidoc.setVisible(isMarkdown());
    indexSelection.setVisible(isAsciidoc());
    contextMenu.show(getWebView(),event.getSceneX(),event.getSceneY());
    checkWordSuggestions();
  }
;
  getWebView().setOnContextMenuRequested(contextMenuRequested);
  getWebView().setOnMouseClicked(event -> {
    if (contextMenu.isShowing()) {
      contextMenu.hide();
    }
  }
);
  getWebView().setOnDragDropped(event -> {
    Dragboard dragboard=event.getDragboard();
    boolean success=false;
    if (dragboard.hasFiles() && !dragboard.hasString()) {
      List<File> dragboardFiles=dragboard.getFiles();
      if (dragboardFiles.size() == 1) {
        Path path=dragboardFiles.get(0).toPath();
        if (Files.isDirectory(path)) {
          threadService.runTaskLater(() -> {
            StringBuffer buffer=new StringBuffer();
            buffer.append("String_Node_Str");
            buffer.append("String_Node_Str");
            buffer.append(asciiTreeGenerator.generate(path));
            buffer.append("String_Node_Str");
            threadService.runActionLater(() -> {
              insert(buffer.toString());
            }
);
          }
);
          success=true;
        }
      }
      Optional<String> block=parserService.toImageBlock(dragboardFiles);
      if (block.isPresent()) {
        insert(block.get());
        success=true;
      }
 else {
        block=parserService.toIncludeBlock(dragboardFiles);
        if (block.isPresent()) {
          insert(block.get());
          success=true;
        }
      }
    }
    if (dragboard.hasHtml() && !success) {
      Optional<String> block=parserService.toWebImageBlock(dragboard.getHtml());
      if (block.isPresent()) {
        insert(block.get());
        success=true;
      }
    }
    if (dragboard.hasString() && !success) {
      insert(dragboard.getString());
      success=true;
    }
    event.setDropCompleted(success);
    event.consume();
  }
);
}

Fixed version (ground truth):
public void initializeEditorContextMenus(){
  webView.setContextMenuEnabled(false);
  contextMenu=new ContextMenu();
  MenuItem cut=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.cutCopy(editorSelection());
    execCommand("String_Node_Str");
  }
);
  MenuItem copy=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.cutCopy(editorSelection());
  }
);
  MenuItem paste=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.paste();
  }
);
  MenuItem pasteRaw=MenuItemBuilt.item("String_Node_Str").click(e -> {
    controller.pasteRaw();
  }
);
  MenuItem indexSelection=MenuItemBuilt.item("String_Node_Str").click(e -> {
    shortcutProvider.getProvider().addIndexSelection();
  }
);
  MenuItem includeAsSubDocument=MenuItemBuilt.item("String_Node_Str").click(e -> {
    shortcutProvider.getProvider().includeAsSubdocument();
  }
);
  MenuItem replacements=MenuItemBuilt.item("String_Node_Str").click(this::replaceSubs);
  MenuItem markdownToAsciidoc=MenuItemBuilt.item("String_Node_Str").click(e -> {
    MarkdownService markdownService=applicationContext.getBean(MarkdownService.class);
    markdownService.convertToAsciidoc(getEditorValue(),content -> threadService.runActionLater(() -> {
      tabService.newDoc(content);
    }
));
  }
);
  final Menu editorLanguage=new Menu("String_Node_Str");
  final Menu defaultLanguage=new Menu("String_Node_Str");
  ToggleGroup editorLanguageGroup=new ToggleGroup();
  ToggleGroup defaultLanguageGroup=new ToggleGroup();
  final RadioMenuItem disableSpeller=CheckItemBuilt.check("String_Node_Str",false).bindBi(spellcheckConfigBean.disableSpellCheckProperty()).click(e -> {
    checkSpelling();
  }
).build();
  Menu languageMenu=new Menu("String_Node_Str");
  languageMenu.getItems().addAll(editorLanguage,defaultLanguage,disableSpeller);
  EventHandler<ContextMenuEvent> contextMenuRequested=event -> {
    final ObservableList<MenuItem> contextMenuItems=contextMenu.getItems();
    final List<MenuItem> menuItems=Arrays.asList(cut,copy,paste,pasteRaw,markdownToAsciidoc,replacements,indexSelection,includeAsSubDocument,languageMenu);
    for (    MenuItem menuItem : menuItems) {
      if (!contextMenuItems.contains(menuItem)) {
        contextMenuItems.add(menuItem);
      }
    }
    if (editorLanguage.getItems().isEmpty()) {
      editorLanguage.getItems().add(CheckItemBuilt.check("String_Node_Str",true).click(e -> {
        setSpellLanguage(null);
        checkSpelling();
      }
).group(editorLanguageGroup).build());
      final ObservableList<Path> languages=spellcheckConfigBean.getLanguages();
      for (      Path language : languages) {
        final String pathCleanName=IOHelper.getPathCleanName(language);
        editorLanguage.getItems().add(CheckItemBuilt.check(pathCleanName,false).click(e -> {
          setSpellLanguage(language);
          checkSpelling();
        }
).group(editorLanguageGroup).build());
        defaultLanguage.getItems().add(CheckItemBuilt.check(pathCleanName,spellcheckConfigBean.defaultLanguageProperty().isEqualTo(language).get()).click(e -> {
          spellcheckConfigBean.setDefaultLanguage(language);
          checkSpelling();
        }
).group(defaultLanguageGroup).build());
      }
    }
    if (contextMenu.isShowing()) {
      contextMenu.hide();
    }
    markdownToAsciidoc.setVisible(isMarkdown());
    indexSelection.setVisible(isAsciidoc());
    contextMenu.show(getWebView(),event.getSceneX(),event.getSceneY());
    contextOpen.set(true);
    checkWordSuggestions();
  }
;
  contextMenu.setOnHidden(event -> {
    threadService.runActionLater(() -> {
      contextOpen.set(false);
    }
,true);
  }
);
  getWebView().addEventFilter(KeyEvent.ANY,event -> {
    if (contextOpen.get()) {
      event.consume();
    }
  }
);
  getWebView().setOnContextMenuRequested(contextMenuRequested);
  getWebView().setOnMouseClicked(event -> {
    if (contextMenu.isShowing()) {
      contextMenu.hide();
    }
  }
);
  getWebView().setOnDragDropped(event -> {
    Dragboard dragboard=event.getDragboard();
    boolean success=false;
    if (dragboard.hasFiles() && !dragboard.hasString()) {
      List<File> dragboardFiles=dragboard.getFiles();
      if (dragboardFiles.size() == 1) {
        Path path=dragboardFiles.get(0).toPath();
        if (Files.isDirectory(path)) {
          threadService.runTaskLater(() -> {
            StringBuffer buffer=new StringBuffer();
            buffer.append("String_Node_Str");
            buffer.append("String_Node_Str");
            buffer.append(asciiTreeGenerator.generate(path));
            buffer.append("String_Node_Str");
            threadService.runActionLater(() -> {
              insert(buffer.toString());
            }
);
          }
);
          success=true;
        }
      }
      Optional<String> block=parserService.toImageBlock(dragboardFiles);
      if (block.isPresent()) {
        insert(block.get());
        success=true;
      }
 else {
        block=parserService.toIncludeBlock(dragboardFiles);
        if (block.isPresent()) {
          insert(block.get());
          success=true;
        }
      }
    }
    if (dragboard.hasHtml() && !success) {
      Optional<String> block=parserService.toWebImageBlock(dragboard.getHtml());
      if (block.isPresent()) {
        insert(block.get());
        success=true;
      }
    }
    if (dragboard.hasString() && !success) {
      insert(dragboard.getString());
      success=true;
    }
    event.setDropCompleted(success);
    event.consume();
  }
);
}