That's despite the appropriate HTTP header:
Accept-Language: en-US,en;q=0.5
When you share a Russian story with a non-russian speaker, they will still be able to read the story in their own set Content Language in the Settings. We're working on improving the UX of language, sharing a story, and more.
For example, I can speak Portuguese, Spanish, Japanese and English. Ideally I would want news in those languages to keep their original text, while translating news in other languages to a target language.
For example, if I set my language as English, Russian news would get translated to English, but Portuguese ones would keep their original text.