Version

3.1.2

Reproduction link

https://codesandbox.io/s/amazing-wozniak-172n1

Steps to reproduce

open : https://codesandbox.io/s/amazing-wozniak-172n1 page move : hello -> hello2 -> hello -> hello2

What is expected?

Thanks for making vuejs.

What is actually happening?

used in a different way

Duplicate of https://github.com/vuejs/vue-next/issues/4022