Redirection for `/index` leads to empty page

[swaldmann]

Describe the bug

Accessing a page via suffixing /index redirects you to the correct page, but no content is displayed. This can be reproduced on vitepress.dev, too: https://vitepress.dev/guide/getting-started/index. A reload afterwards fixes the problem.

In our project we noticed by chance when one of our contributors put an /index suffix on a relative link. Our broken link checker noticed because the request still returns a 404 status code. It's a minor issue but could be handled nicer.

Caveat: this does not seem reproducible during local development.

Reproduction

Open https://vitepress.dev/guide/getting-started/index.

Expected behavior

Either page content is rendered correctly or a 404 is shown.

System Info

System:
  OS: macOS 14.5
  CPU: (12) arm64 Apple M2 Pro
  Memory: 2.68 GB / 32.00 GB
  Shell: 5.9 - /bin/zsh
Binaries:
  Node: 20.13.1 - /usr/local/bin/node
  npm: 10.5.2 - /usr/local/bin/npm
  pnpm: 8.15.6 - ~/Library/pnpm/pnpm
Browsers:
  Chrome: 126.0.6478.128
  Safari: 17.5

Additional context

No response

Validations

• [X] Check if you're on the latest VitePress version.
• [X] Follow our Code of Conduct
• [X] Read the docs.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.