Version

3.1.2

Reproduction link

https://github.com/hezhongfeng/vue-page-stack/tree/next

Steps to reproduce

I don't like Vue's KeepAlive cache policy , So I want to create a component like KeepAlive. But When I use my Component with transition，there is a error Uncaught TypeError: Cannot read property '_' of null. This error is create by packages/runtime-core/src/componentSlots.ts initSlots. I don't know how to resolve it.

const KKeepAliveImpl: ComponentOptions = {
  name: `KKeepAlive`,
  __isKeepAlive: true,

  setup(props, { slots }: SetupContext) {
    return () => {};
  },
};

const KKeepAlive = KKeepAliveImpl as any as {
  __isKeepAlive: true;
  new (): {
    $props: VNodeProps;
  };
};

What is expected?

Like KeepAlive work.

What is actually happening?

there is a error Uncaught TypeError: Cannot read property '_' of null.

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