pre_checkout_query & successful_payment doesn't work

[justmavi]

Hey m8s.

@Scene(SceneNames.PAYMENT_SCENE)
export class PaymentScene {
  @On('pre_checkout_query')
  public async onPreCheckout(@Ctx() ctx: Context) {
    console.log('pre checkout query', ctx);
    await ctx.answerPreCheckoutQuery(true);
  }

  @On('successful_payment')
  public onSuccessfulPayment(@Ctx() ctx: Context) {
    console.log('success', ctx);
  }
}

This code doesn't work.
But when I use bot.on, everything works:

@Scene(SceneNames.PAYMENT_SCENE)
export class PaymentScene {
  constructor(@InjectBot() bot: Telegraf<Context>) {
    super();

    bot.on('pre_checkout_query', this.onPreCheckout.bind(this));
    bot.on('successful_payment', this.onSuccessfulPayment.bind(this));
  }
  public async onPreCheckout(ctx: Context) {
    console.log('pre checkout query', ctx);
    await ctx.answerPreCheckoutQuery(true);
  }

  public onSuccessfulPayment(ctx: Context) {
    console.log('success', ctx);
  }
}

[mr-kenikh]

@justmavi telegraf/telegraf#1863 (comment)