更新到1.3.1后，表单Input输入框输入时，控制台报错 TypeError: Cannot read property 'cleanUpUselessFields' of undefined"

[wuxj]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.3.1

Environment

Google Chrome 71.0.3578.98（正式版本） （64 位）

Reproduction link

https://vuecomponent.github.io/ant-design-vue/components/form-cn/

Steps to reproduce

Input正常输入内容，文本框中的值触发change时，出错

What is expected?

正常输入

What is actually happening?

控制台有出错信息

---

webpack-internal:///./node_modules/vue/dist/vue.esm.js:611 [Vue warn]: Error in updated hook: "TypeError: Cannot read property 'cleanUpUselessFields' of undefined"

found in

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