notFound() causes "Uncaught NotFoundError: Failed to execute 'removeChild' on 'Node'

[Tockra]

Description

You can try this example project (https://github.com/Tockra/nextjs-test-playground) and visit a unknown locale path. E.g. localhost:3000/fr
This causes a error in console and does not show the notFound page.
Is this a configuration issue or a bug in next-intl?

Console error:

Verifications

• I've verified that the problem I'm experiencing isn't covered in the docs.
• I've searched for similar, existing issues on GitHub and Stack Overflow.
• I've compared my app to a working example to look for differences.

Mandatory reproduction URL

https://github.com/Tockra/nextjs-test-playground

Reproduction description

Steps to reproduce:

1. Open reproduction
2. Open a link with an unknown locale
3. See error:

Uncaught NotFoundError: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node.
    at removeChildFromContainer (react-dom-client.development.js:19098:21)
    at runWithFiberInDEV (react-dom-client.development.js:543:16)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11705:17)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11791:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11791:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11791:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11791:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11791:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11775:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)
    at commitDeletionEffectsOnFiber (react-dom-client.development.js:11818:11)
    at recursivelyTraverseDeletionEffects (react-dom-client.development.js:11629:9)

Expected behaviour

No error

[amannn]

Can you try to compare your solution against a working example and also consult the error files docs? Maybe that helps to find an issue in your setup.

[Tockra]

The biggest difference is that I used Next.js 15.

I’m currently on my smartphone, but in the evening, I’ll be back on my computer and can update the example code (provided by you) to Next.js 15.

[amannn]

Sure, you can also find the examples updated to Next.js 15 in this branch/PR: #1089