Reloading form with an action (with `required` input)

[ghigt]

The Problem

Error when submitting a form (with required keyword) after having replaced entirely the form via a func reducer.

Steps to Reproduce

Have an input required, a reducer to replace the form via an action, click on submit (it fails).

Expected Behavior

Same behavior than without required keyword

Reproducible Code Example

https://codesandbox.io/s/vyl0923vq3