Double RSC fetch after server action redirect

[cfrank]

Link to the code that reproduces this issue

https://github.com/vercel/next.js

To Reproduce

1. Clone NextJS canary
2. pnpm i
3. pnpm build
4. NEXT_TEST_SKIP_CLEANUP=1 pnpm test-start test/e2e/app-dir/actions/app-action.test.ts
5. Visit temporary next install directory (/tmp/next-install-*)
6. Run pnpm next
7. Visit http://localhost:3000/client
8. Click "redirect"

Current vs. Expected behavior

Currently when performing a redirect within a server action we are correctly resolving the RSC bundle within the POST request and performing the client side redirect to the destination path. But upon loading the destination path we are performing a subsequent fetch of the destination path

Provide environment information

Operating System: Linux
Browser: Chrome
NextJS: `v14.3.0-canary.80`

Which area(s) are affected? (Select all that apply)

Navigation

Which stage(s) are affected? (Select all that apply)

next dev (local), next start (local), Other (Deployed)

Additional context

I encountered this bug while working on #64604 where I added more robust tests to verify that only a single request was being made during server action redirects. When I opened the PR the tests were passing and only a single POST request was being made with all relevant data being shipped within that single request, but shortly after a change was landed which introduced this second request.

[github-actions]

We could not detect a valid reproduction link. Make sure to follow the bug report template carefully.

Why was this issue closed?

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My repository is private and cannot make it public

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I did not open this issue, but it is relevant to me, what can I do to help?

Anyone experiencing the same issue is welcome to provide a minimal reproduction following the above steps by opening a new issue.

I think my reproduction is good enough, why aren't you looking into it quickly?

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Useful Resources

• How to Contribute to Open Source (Next.js)
• How to create a Minimal, Complete, and Verifiable example
• Reporting a Next.js bug
• Next.js Triaging issues