Version

3.0.0

Reproduction link

https://codesandbox.io/s/vue-3-start-forked-rrcp8?file=/src/Bar.js

Steps to reproduce

The Setup function is not inherited

What is expected?

Parameters must be passed

What is actually happening?

Returns undefined

See https://github.com/vuejs/vue-next/issues/1866#issuecomment-674881439

I see, thank you