tanstack start + nitro breaks `notFound()` in development

[paperclover]

Which project does this relate to?

Start

Describe the bug

the hosting guide (https://tanstack.com/start/latest/docs/framework/react/guide/hosting) suggests to use nitro for most outputs, but this breaks notFound

Your Example Website or App

https://github.com/paperclover/bug-reproductions/tree/tanstack-nitro-404

Steps to Reproduce the Bug or Issue

• npm i
• npm run dev
• open to /, click on either link, it works
• refresh the page
• see Cannot GET / instead of the NotFound.tsx component

Expected behavior

to see NotFound.tsx

Screenshots or Videos

n/a

Platform

• Router / Start Version: [e.g. 1.121.0]
• OS: n/a
• Browser: curl
• Browser Version: 8.7.1
• Bundler: vite/nitro
• Bundler Version: latest

Additional context

if this is a bug in nitro, it is still tanstack's job to have correct documentation.

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🔗 Similar & Duplicate Issues

Possible Duplicates

• TanStack/router#5877

🔗 Related PRs

#5253 - fix: nitro v3 plugin link in the hosting docs [merged]
#5272 - docs: wrong link to bun server implementation in hosting page [merged]
#5453 - docs(start): update nitro v3 instructions for nitro alpha package [merged]
#5821 - docs(hosting): update nitro to v3 [merged]
#5824 - docs(solid-start): sync nitro v3 hosting guide to react [merged]

👤 Suggested Assignees

• theoludwig
• gtg7784
• MatteoGauthier
• dotnize
• pi0

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[paperclover]

so this is a duplicate of #5877, but @pi0 why has nitro not published the fix?