Version

3.0.7

Reproduction link

https://codesandbox.io/s/reactivity-issue-demo-h6mmz?file=/src/App.vue

Steps to reproduce

Please have a look at the minimal reproduction demo

What is expected?

all three identical components should behave identical

What is actually happening?

the second one doesn't update correctly

This is too much for a reproduction, please boil it down and open a new issue