missing translation keys after change locale

[ValeriiMakhniuk]

i18n.json:

{
    "locales": ["ru", "en"],
    "defaultLocale": "ru",
    "pages": {
        "*": ["common", "layout", "validations", "notifications"],
        "/auth/login": ["auth"],
    },
    "logBuild": true
}

folder structure

./locales/ru/auth.json:

"login": {
        "title": "Вход в аккаунт",
        ...
}

./locales/en/auth.json:

"login": {
        "title": "Enter to your account",
        ...
}

Problem:
If i use default locale on auth/login page - everything is ok, but then i change route to en/auth/login i get warnings for each key: "auth:login.title" is missing in current namespace configuration. Try adding "login.title" to the namespace "auth".
Here is my nextJs log - you can see that locale has changed:

Usage

const { t } = useTranslation("auth");
console.log(t`login.title`) // auth:login.title