Version

3.1.1

Reproduction link

https://github.com/vuejs/vue-next

Steps to reproduce

打包后切换路由报错 TypeError: Cannot read property 'exposed' of null TypeError: Cannot read property 'parentnote' of null 降低版本为3.0.11后变正常了

What is expected?

不报错

What is actually happening?

TypeError: Cannot read property 'exposed' of null TypeError: Cannot read property 'parentnote' of null

Please read and follow https://new-issue.vuejs.org/?repo=vuejs/vue-next&lang=zh-cn#why-repro and open issues in English