Listener will be binded twice while its parent rebuild

class FileDropBox extends StatelessWidget {
  FileDropBox({super.key});

  final controller = Get.put(FileDropController());
  @override
  Widget build(BuildContext context) {
    return DropTarget(
      onDragDone: (details) {
        final paths = details.files.map((file) => file.path).toList();
        debugPrint("onDragDone!!!");
        controller.onFilesDropped(paths);
      },
      child: const SizedBox.expand(),
    );
  }
}

For example, when the stateless widget FileDropBox rebuild, DropTarget will add a new onDragDone listener.
Which Means when I drop file to this widget, it will run onDragDone twice.

When FileDropBox rebuild again, onDragDone will run for three times.

Start from the FileDropBox example and inspect DropTarget's listener lifecycle, especially how its onDragDone callback is registered when the parent rebuilds. Reproduce the example across rebuilds and verify that dropping a file invokes the callback only once, then check the relevant plugin tests if available.