detectBrowserLanguage doesn't work with defaultLocale - probably prefix_except_default or a cookie issue

[amini-amr]

Environment

• Operating System: Windows_NT
• Node Version: v22.11.0
• Nuxt Version: 3.15.2
• CLI Version: 3.20.0
• Nitro Version: 2.10.4
• Package Manager: [email protected]
• Builder: -
• User Config: modules, components, app, runtimeConfig, devServer, compatibilityDate, typescript, hooks, eslint, i18n
• Runtime Modules: @alo-komak/[email protected], @alo-komak/[email protected], @vee-validate/[email protected], @nuxt/[email protected], @nuxt/[email protected], @pinia/[email protected], @nuxtjs/[email protected]
• Build Modules: -

Reproduction

https://stackblitz.com/edit/nuxt-starter-5gvqro5j?file=nuxt.config.ts

Describe the bug

detectBrowserLanguage doesn't work for the defaultLocale. It works for any other locales. The issue I noticed is that changing the locale using switchLocalePath() changes the cookie value. Still, not for the default one, so each time it gets redirected to the last locale set in cookies unless you change the cookie and change the URL to the default locale by yourself. The only solution I found for this issue is to ignore the use of cookies and setting the whole detectBrowserLanguage to false

Additional context

No response

Logs

[amini-amr]

The solution is to use the setLocale