Router blocking stopped working with memory history

[sher]

As stated in the title, router blocking stopped working with memory history since version 1.89.3. Could not find any issue report and confirm if there is a specific reason for that. We use memory history in our tests and have cases that check the blocking feature.

[schiller-manuel]

can you please provide a complete minimal example for debugging?

[rothsandro]

Here's a repro: https://github.com/rothsandro/repro.ts-router-blocker-memory

const Blocker = () => {
  useBlocker({
    shouldBlockFn: () => {
      const shouldLeave = confirm("Are you sure you want to leave?");
      return !shouldLeave;
    },
  });

  return null;
};

const rootRoute = createRootRoute({
  component: () => (
    <>
      <Blocker />
      <Link to="/">Go to Index</Link> <Link to="/child">Go to Child</Link>
      <hr />
      <Outlet />
    </>
  ),
});

const indexRoute = createRoute({
  getParentRoute: () => rootRoute,
  path: "/",
  component: () => <div>Index Route</div>,
});

const child = createRoute({
  getParentRoute: () => rootRoute,
  path: "/child",
  component: () => <div>Child Route</div>,
});

const routeTree = rootRoute.addChildren([indexRoute, child]);
const history = createMemoryHistory();
const router = createRouter({ routeTree, history });

createRoot(document.getElementById("root")!).render(
  <RouterProvider router={router} />
);