Link to the code that reproduces this issue

https://github.com/lp0ql/next-15.3.1-double-server-side-rendering

To Reproduce

Describe the Bug

When a user clicks a (next/link) that points to a route where the server component calls redirect(), the target page appears to be server-rendered twice.

• Does not happen in v14 (tested with 14.2.28).
• Does not happen in production (npm run build && npm run start).
• Does not happen when reactStrictMode is false in next.config.js

Steps to Reproduce

The repository contains three sub-directories:

To verify the regression:

1. git clone https://github.com/lp0ql/next-15.3.1-double-server-side-rendering
2. cd next-15.3.1-double-server-side-rendering/15 or cd next-15.3.1-double-server-side-rendering/15-reproduction-template
3. npm install
4. npm run dev
5. Open http://localhost:3000
6. Click link
7. Watch the dev-server terminal — you should see the same log line appear twice.

If you repeat the same procedure inside the 14 directory, the log appears only once, confirming that this is a v15-specific regression.

Current vs. Expected behavior

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 24.4.0: Fri Apr 11 18:33:24 PDT 2025; root:xnu-11417.101.15~117/RELEASE_ARM64_VMAPPLE
  Available memory (MB): 8192
  Available CPU cores: 8
Binaries:
  Node: 22.1.0
  npm: 10.7.0
  Yarn: N/A
  pnpm: 10.9.0
Relevant Packages:
  next: 15.3.1 // Latest available version is detected (15.3.1).
  eslint-config-next: 15.3.1
  react: 19.1.0
  react-dom: 19.1.0
  typescript: 5.8.3
Next.js Config:
  output: N/A

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

Linking and Navigating

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

next dev (local)

Additional context

First-time reporter—sorry in advance if I missed anything.
Big thanks to the Next.js team for your awesome work!