Version

3.0.4

Reproduction link

https://codesandbox.io/s/festive-antonelli-imnb7?file=/src/components/ComposationApi.vue

Steps to reproduce

1. click change in vue with Option Api box and see change
2. click change or change2 in vue with Composation Api box and see not changed!!

What is expected?

when click change or change2 in vue with Composation Api and change that data.

What is actually happening?

when click change or change2 in vue with Composation Api data not change.

use ref

use ref

try with ref: sandbox but again not work! why?

Please use chat.vuejs.org for questions and help, and read the docs on how to use refs. This is not a bug, and Github issues are reserved for bug reports.