loaderDeps running multiple times and sometimes missing search param at all

[maxkoretskyi]

Which project does this relate to?

Router

Describe the bug

I see this super weird behavior, I have extremely basic route definition:

import {
  createRootRoute,
  createRoute,
  createRouter,
  Outlet,
  Link,
} from "@tanstack/react-router";

const rootRoute = createRootRoute({
  loaderDeps: ({ search }) => {
    console.log(search?.aaa);
    return {
      aaa: search?.aaa,
    };
  },
  component: () => (
    <div>
      <nav style={{ padding: "1rem", borderBottom: "1px solid #ccc" }}>
        <Link to="/" style={{ marginRight: "1rem" }}>
          Home
        </Link>
        <Link to="/about?aaa=333">About</Link>
      </nav>
      <main style={{ padding: "1rem" }}>
        <Outlet />
      </main>
    </div>
  ),
});

const indexRoute = createRoute({
  getParentRoute: () => rootRoute,
  path: "/",
  component: () => <h1>Home Page</h1>,
});

const aboutRoute = createRoute({
  getParentRoute: () => rootRoute,
  path: "/about",
  component: () => <h1>About Page</h1>,
});

const routeTree = rootRoute.addChildren([indexRoute, aboutRoute]);

export const router = createRouter({ routeTree });

and when I navigate to "/about?aaa=333", in the console I see the loaderDeps function accessed multiple times, and what is unexpected is the search param being undefined.

333
vendors~embed~sandbox-startup.94f8a764c.chunk.js:1 undefined
vendors~embed~sandbox-startup.94f8a764c.chunk.js:1 333
vendors~embed~sandbox-startup.94f8a764c.chunk.js:1 undefined
vendors~embed~sandbox-startup.94f8a764c.chunk.js:1 333
vendors~embed~sandbox-startup.94f8a764c.chunk.js:1 undefined
vendors~embed~sandbox-startup.94f8a764c.chunk.js:1 333

Can anyone explain this behavior or how to debug it?

Your Example Website or App

https://codesandbox.io/p/sandbox/wandering-violet-mj5szq

Steps to Reproduce the Bug or Issue

1. Click on About link at the top
2. Explore console logs

Expected behavior

All logs always show query param 333, not undefined

Screenshots or Videos

No response

Platform

• Router / Start Version: [e.g. 1.121.0]
• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Browser Version: [e.g. 91.1]
• Bundler: [e.g. vite]
• Bundler Version: [e.g. 7.0.0]

Additional context

No response