Program: 96244
Project: 96244
Buggy source:
public _GtkStatusIconNativeTray(final SystemTray systemTray){
  super();
  Gtk.startGui();
  final GtkMenu gtkMenu=new GtkMenu(){
    @Override public void setEnabled(    final MenuItem menuItem){
      Gtk.dispatch(new Runnable(){
        @Override public void run(){
          boolean enabled=menuItem.getEnabled();
          if (visible && !enabled) {
            Gtk.gtk_status_icon_set_visible(trayIcon,enabled);
            visible=false;
          }
 else           if (!visible && enabled) {
            Gtk.gtk_status_icon_set_visible(trayIcon,enabled);
            visible=true;
          }
        }
      }
);
    }
    @Override public void setImage(    final MenuItem menuItem){
      imageFile=menuItem.getImage();
      if (imageFile == null) {
        return;
      }
      Gtk.dispatch(new Runnable(){
        @Override public void run(){
          Gtk.gtk_status_icon_set_from_file(trayIcon,imageFile.getAbsolutePath());
          if (!isActive) {
            isActive=true;
            Gtk.gtk_status_icon_set_visible(trayIcon,true);
          }
        }
      }
);
    }
    @Override public void setText(    final MenuItem menuItem){
    }
    @Override public void setShortcut(    final MenuItem menuItem){
    }
    @Override public void remove(){
      if (!shuttingDown.getAndSet(true)) {
        Gtk.dispatch(new Runnable(){
          @Override public void run(){
            Gtk.gtk_status_icon_set_visible(trayIcon,false);
            Gobject.g_object_unref(trayIcon);
            trayIcon=null;
            gtkCallbacks.clear();
          }
        }
);
        super.remove();
        Gtk.shutdownGui();
      }
    }
  }
;
  Gtk.dispatch(new Runnable(){
    @Override public void run(){
      trayIcon=Gtk.gtk_status_icon_new();
      final GEventCallback gtkCallback=new GEventCallback(){
        @Override public void callback(        Pointer notUsed,        final GdkEventButton event){
          if (event.type == 4) {
            Gtk.gtk_menu_popup(gtkMenu._nativeMenu,null,null,Gtk.gtk_status_icon_position_menu,trayIcon,0,event.time);
          }
        }
      }
;
      final NativeLong button_press_event=Gobject.g_signal_connect_object(trayIcon,"String_Node_Str",gtkCallback,null,0);
      gtkCallbacks.add(gtkCallback);
      gtkCallbacks.add(button_press_event);
    }
  }
);
  Gtk.waitForStartup();
  Gtk.dispatch(new Runnable(){
    @Override public void run(){
      Gtk.gtk_status_icon_set_title(trayIcon,"String_Node_Str");
      if (System.getProperty("String_Node_Str","String_Node_Str").equals("String_Node_Str")) {
        Gtk.gtk_status_icon_set_name(trayIcon,"String_Node_Str");
      }
    }
  }
);
  bind(gtkMenu,null,systemTray);
}

Fixed version (ground truth):
public _GtkStatusIconNativeTray(final SystemTray systemTray){
  super();
  Gtk.startGui();
  final GtkMenu gtkMenu=new GtkMenu(){
    @Override public void setEnabled(    final MenuItem menuItem){
      Gtk.dispatch(new Runnable(){
        @Override public void run(){
          boolean enabled=menuItem.getEnabled();
          if (visible && !enabled) {
            Gtk.gtk_status_icon_set_visible(trayIcon,enabled);
            visible=false;
          }
 else           if (!visible && enabled) {
            Gtk.gtk_status_icon_set_visible(trayIcon,enabled);
            visible=true;
          }
        }
      }
);
    }
    @Override public void setImage(    final MenuItem menuItem){
      imageFile=menuItem.getImage();
      if (imageFile == null) {
        return;
      }
      Gtk.dispatch(new Runnable(){
        @Override public void run(){
          Gtk.gtk_status_icon_set_from_file(trayIcon,imageFile.getAbsolutePath());
          if (!isActive) {
            isActive=true;
            Gtk.gtk_status_icon_set_visible(trayIcon,true);
          }
        }
      }
);
    }
    @Override public void setText(    final MenuItem menuItem){
    }
    @Override public void setShortcut(    final MenuItem menuItem){
    }
    @Override public void remove(){
      if (!shuttingDown.getAndSet(true)) {
        Gtk.dispatch(new Runnable(){
          @Override public void run(){
            Gtk.gtk_status_icon_set_visible(trayIcon,false);
            Gobject.g_object_unref(trayIcon);
            trayIcon=null;
            gtkCallback=null;
          }
        }
);
        super.remove();
        Gtk.shutdownGui();
      }
    }
  }
;
  Gtk.dispatch(new Runnable(){
    @Override public void run(){
      trayIcon=Gtk.gtk_status_icon_new();
      gtkCallback=new GEventCallback(){
        @Override public void callback(        Pointer notUsed,        final GdkEventButton event){
          if (event.type == 4) {
            Gtk.gtk_menu_popup(gtkMenu._nativeMenu,null,null,Gtk.gtk_status_icon_position_menu,trayIcon,0,event.time);
          }
        }
      }
;
      Gobject.g_signal_connect_object(trayIcon,"String_Node_Str",gtkCallback,null,0);
    }
  }
);
  Gtk.waitForStartup();
  Gtk.dispatch(new Runnable(){
    @Override public void run(){
      Gtk.gtk_status_icon_set_title(trayIcon,"String_Node_Str");
      if (System.getProperty("String_Node_Str","String_Node_Str").equals("String_Node_Str")) {
        Gtk.gtk_status_icon_set_name(trayIcon,"String_Node_Str");
      }
    }
  }
);
  bind(gtkMenu,null,systemTray);
}