Which project does this relate to?

Router

Describe the bug

I recently encountered an issue where the parent route sets a context value in beforeLoad, but the child route does not inherit it.

I've posted this in #3403 (reply in thread) previously.

Your Example Website or App

https://stackblitz.com/~/github.com/ImSingee/tanstack-router-bug-report-hauecq3w

Steps to Reproduce the Bug or Issue

1. Go to /, and the browser will redirect you to /login at the first time
2. Click "Login", and the browser will set some state and redirect you to the /feed/all page
3. In the /feed/all page, it shows feedId = (error)
4. See the router devtools, the context feedId exists in /feed/all but not /feed/all/
5. Refresh the page, it shows feedId = "all" (expected)

(If you need, you can click the logout button and restart from the step 1 to see or inspect the situation again)

Expected behavior

In the step 3, it should show feedId = "all". In the step 4, the context in the /feed/all/ should be the same as /feed/all

Screenshots or Videos

Platform

• OS: macOS
• Browser: Chrome
• Version: 132.0.2957.140 (Official build) (arm64)

Additional context

I try my best to make the reproduce example minimal. But the trigger condition is indeed complex.

Most interesting, if change the last line of SyncProvider (/src/lib/sync/provider.tsx) from return <AContext.Provider value={db}>{children}</AContext.Provider>; to return children, the issue disappears.