nextjs-14-redirect-bug

A minimal demonstration of redirect() inside a server action can't switch between root layouts in next.js 14

Corresponding issue report: vercel/next.js#58263

Scenario 1

1. start the development server with npm run dev
2. Open http://localhost:3000/en in your browser
3. Click on the "search" submit button on top of the page next to the text input (it doesn't matter what you enter into the textfield, it always redirects to the same route)

Expected result:

You should land on /en/search/hello as that is the hardcoded redirection inside the server action in services/SiteSearch.service.ts. This was the behavior in Next.js 13.4.12, but it also threw an error (see vercel/next.js#53392)

Actual result:

The server action sends back a redirect instruction among the response headers:

X-Action-Redirect: /en/search/hello

but the page does not go to that path

Scenario 2:

1. start the development server with npm run dev
2. Open http://localhost:3000/en/search/world in your browser
3. Click on the submit button as in the previous scenario

Expected result:

The page should get redirected to /en/search/hello

Actual result:

The page does get redirected to /en/search/hello