Version

3.2.11

Reproduction link

codesandbox.io

Steps to reproduce

点击页面的按钮即可触发

What is expected?

正常弹出toast

What is actually happening?

控制台以及页面报错

分析似乎是computed触发相关依赖更新，但是toast组件部分el是空的，导致报错问题

Duplicate of https://github.com/vuejs/vue-next/issues/4760