Hydration error with react SSR

[Neaox]

Which project does this relate to?

Router

Describe the bug

A simple application using SSR (streamed or non-streamed) fails to hydrate. The stack trace seems to point to the router being the issue:

Warning: Did not expect server HTML to contain a <div> in <div>.
at Suspense
at Matches (https://vitejsviteycpx87r5-ptqx--5173--d20a0a75.local-credentialless.webcon…er.io/node_modules/.vite/deps/@tanstack_react-router.js?v=fb30a0d2:3418:18)
at RouterContextProvider (https://vitejsviteycpx87r5-ptqx--5173--d20a0a75.local-credentialless.webcon…ner.io/node_modules/.vite/deps/@tanstack_react-router.js?v=fb30a0d2:5175:3)
at RouterProvider (https://vitejsviteycpx87r5-ptqx--5173--d20a0a75.local-credentialless.webcon…er.io/node_modules/.vite/deps/@tanstack_react-router.js?v=fb30a0d2:5194:27)

Uncaught Error: There was an error while hydrating this Suspense boundary. Switched to client rendering.
at updateDehydratedSuspenseComponent (chunk-QXLG2TGQ.js?v=fb30a0d2:15409:57)
at updateSuspenseComponent (chunk-QXLG2TGQ.js?v=fb30a0d2:15164:24)
at beginWork (chunk-QXLG2TGQ.js?v=fb30a0d2:15985:22)
at beginWork$1 (chunk-QXLG2TGQ.js?v=fb30a0d2:19804:22)
at performUnitOfWork (chunk-QXLG2TGQ.js?v=fb30a0d2:19249:20)
at workLoopConcurrent (chunk-QXLG2TGQ.js?v=fb30a0d2:19240:13)
at renderRootConcurrent (chunk-QXLG2TGQ.js?v=fb30a0d2:19215:15)
at performConcurrentWorkOnRoot (chunk-QXLG2TGQ.js?v=fb30a0d2:18726:46)
at workLoop (chunk-QXLG2TGQ.js?v=fb30a0d2:195:42)
at flushWork (chunk-QXLG2TGQ.js?v=fb30a0d2:174:22)

Your Example Website or App

https://stackblitz.com/edit/vitejs-vite-ycpx87r5

Steps to Reproduce the Bug or Issue

1. Go to the homepage
2. Open dev tools

Expected behavior

The application hydrates successfully

Screenshots or Videos

Platform

• OS: Mac OS
• Browser: Chrome
• Version: 132.0.6834.160

Additional context

No response