plugin_i18n_default_locale stays 'en', even if STRAPI_PLUGIN_I18N_INIT_LOCALE_CODE is set

[dithom]

Bug report

Required System information

• Node.js version: 20.11.1
• NPM version: 10.2.4
• Strapi version: 4.20.5
• Database: MySQL
• Operating system: macOS
• Is your project Javascript or Typescript: Typescript

Describe the bug

When starting Strapi for the first time with an empty database and the env var STRAPI_PLUGIN_I18N_INIT_LOCALE_CODE set to something other, than en, the locale gets created correctly but it won't get set as default in the database. The key plugin_i18n_default_locale stays en. This leads to all content types not being visible in the content manager. However it can be fixed by setting the desired locale as default in the database or using the admin ui.

EDIT: This does not happen only on initial start but on every deployment.

Expected behavior

The locale set using STRAPI_PLUGIN_I18N_INIT_LOCALE_CODE should be set as default in the database.

EDIT: I temporarily fixed the issue using following code:

src/index.ts

export default {
  async bootstrap({ strapi }) {
    // Hotfix for i18n plugin default locale, see: https://github.com/strapi/strapi/issues/19978
    const i18nPluginStore = strapi.store({ type: "plugin", name: "i18n" });
    await i18nPluginStore.set({ key: "default_locale", value: process.env.STRAPI_PLUGIN_I18N_INIT_LOCALE_CODE });
  },
};