Astro Info

Astro                    v4.5.12
Node                     v20.8.1
System                   Linux (x64)
Package Manager          npm
Output                   server
Adapter                  @astrojs/node
Integrations             @astrojs/react
                         @astrojs/vue
                         @astrojs/tailwind
                         @astrojs/mdx
                         @astrojs/partytown
                         client:eager

If this issue only occurs in one browser, which browser is a problem?

Chrome

Describe the Bug

when setting below options, the fallback for SG homepage is not working, the Location in response is a null string.
i18n: { defaultLocale: "default", locales: [ "default", "fr", ], fallback: { "fr": 'default' }, routing: { prefixDefaultLocale: false } }, trailingSlash: "never"

This is the response,
Request URL: https://astro.avepoint.com/uk Request Method: GET Status Code: 302 Found Remote Address: 10.1.0.182:443 Referrer Policy: strict-origin-when-cross-origin Date: Tue, 09 Apr 2024 07:31:48 GMT Last-Modified: Tuesday, 09-Apr-2024 07:31:48 UTC Location: Referrer-Policy: no-referrer-when-downgrade

What's the expected result?

It's should be fallback to default homepage.

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-xfj9kv?file=astro.config.mjs

Participation

• I am willing to submit a pull request for this issue.