CSR (client side transition) not working on 404 pages

Bug report

Describe the bug

Using a Link to go to a 404 page doesn’t work. The link is unresponsive, nothing happens on the browser.

You can reproduce this at https://nrn-v1-hyb-mst-aptd-gcms-lcz-sty-c1-peyfrlyfe.now.sh/fr/examples/built-in-utilities/errors-handling and click on the This is a client-side navigation (CSR) link.

Note that using This is a normal navigation link works as expected, but it uses a <a> link instead.

To Reproduce

1. Use <Link> from next/link with href to a non-existing page
2. Try to click on it

Expected behavior

The link should redirect to a 404 page.

Screenshots

Video at https://youtu.be/mhJE5s-CIEE

Additional context

Reproduced on v9.4.1 to v9.4.4

[ijjk]

You can tell since the deployment doesn’t have internal Next.js changes from the latest canary and still has internal code for v9.4.4.

For example, client page bundles are no longer nested under a directory with BUILD_ID on the latest canary of Next.js and the above deployment is

[balazsorban44]

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