Nonsense with the Russian language in the game. (Deathloop)

The voice acting in the game seems to be done in Russian, and the subtitles, as they were in English, have remained, although the Russian language is in the settings. For some reason, the main menu in the game is in English and all the inscriptions in the game. At the beginning of the game, there is an explanation of which buttons mean what, so this explanation is also in English ... And how is this to be understood?