- [x] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### Version 4.0.0-rc.6 ### Environment chrome, vue@next ### Reproduction link [](https://codesandbox.io/s/gua-ying-wen-ben-gao-du-de-wen-ben-yu-ant-design-vue-next-forked-wktdpg) ### Steps to reproduce 1. 在textarea中输入任意字段, 如 我的名字 2. 然后在名字前面输入括号( ### What is expected? 此时监听事件会调用setRangeText设置右括号, 希望设置成功, 光标在左右括号内 ### What is actually happening? 但实际上设置右括号失败了, 光标重置到了最后. <!-- generated by issue-helper. DO NOT REMOVE -->