React Instantsearch Hooks: SSR not working on v6.27.0

[francisconeves97]

🐛 Bug description

SSR with Next.js is not working on the latest version of react-instantsearch-hooks-web and react-instantsearch-hooks-server (6.27.0). Every element that is rendered inside the <InstantSearch /> component is only rendered on the client side,

🔍 Bug reproduction

Steps to reproduce the behavior:

1. Clone the hooks-ssr example: https://github.com/algolia/react-instantsearch/tree/v6.22.0/examples/hooks-ssr
2. Change the react-instantsearch-hooks, react-instantsearch-hooks-server and react-instantsearch-hooks-web dependencies version from 6.22.0 to 6.27.0
3. Install the npm dependencies
4. Start the server
5. Verify that no search results were server side rendered by checking the html source

Live reproduction:

https://codesandbox.io/s/github/algolia/react-instantsearch/tree/v6.27.0/examples/hooks-next?file=/package.json

💭 Expected behavior

The widgets inside the <InstantSearch /> should be server side rendered

Environment

• React InstantSearch Hooks version: 6.27.0
• React version: 17.0.2

Additional context

Tried to downgrade to version 6.26.0 and the search results are server side rendered, so the issue should have been introduced on the last release

[dominiksipowicz]

I can confirm and reproduce the SSR bug. It's working on the previous version 6.26.0

It can be tested by simply disabling JavaScript in Google Chrome (Settings -> Prefrences -> Debugger -> Disable JavaScript)

[Haroenv]

This is very surprising, as on a quick glance, the only relevant change happened in 6.25.0 with 0a13867, otherwise also InstantSearch.js was updated between 6.26.0 and 6.27.0

Thanks for reporting this, we are investigating further!

[francoischalifour]

The issue comes from #3489. We identified the problem and have a fix for this. We're currently writing more integration tests to make sure this doesn't happen again. You can expect a fix in the next minor version, we'll ping you here.

Thank you for reporting!

[dominiksipowicz]

thanks @francoischalifour, awesome!

[francoischalifour]

The SSR fix was released in v6.28.0. Thank you all!

[francisconeves97]

Amazing, thank you!