Dynamic optional catch-all segments not working

[itsberkelium]

Description

I have folders such as /items/[[...slug]]/page.tsx.

I also have the route added to navigation.ts as

"/items/[...slug]": {
    tr: "/ilanlar/[...slug]",
    en: "/items/[...slug]",
  },

However, when I visit /tr/ilanlar, the app shows a 404 page while /tr/ilanlar/test, /en/items/test, and /en/items renders perfectly.

I also tried the following with no luck.

"/items/[[...slug]]": {
    tr: "/ilanlar/[[...slug]]",
    en: "/items/[[...slug]]",
  },

Mandatory reproduction URL

https://codesandbox.io/p/github/itsberkelium/next-intl-bug-repro-app-router/main

Reproduction description

Steps to reproduce:

1. Open reproduction
2. Go to /en/items url
3. Should work fine
4. Go to /tr/ilanlar url
5. See error: 404

Expected behaviour

It should render without slug for both locales.

[amannn]

True, I think there's a bug.

This:

  "/items/[[...slug]]": {
    tr: "/ilanlar/[[...slug]]",
    en: "/items/[[...slug]]",
  },

… should match when /tr/ilanlar is called.

I need to investigate, thanks for the report!

[michalpuchmertl]

+1, I can confirm this bug occurs in my project as well. Thank you for investigating the problem.