When changing the language directly in the game, some interface elements remain unchanged, including the names of characters and objects.
Partial solution: exit the area and return, or exit to the main menu and return. Minor details will remain unchanged: the enemy list in the area (in the upper right corner), the “Whispers” menu.
Complete solution: restart the game in the desired language.
If fixing this issue will take a long time (if at all possible), I would recommend setting a notification when changing the language in the game: “For correct display, restart the game.”
This will reduce the number of localization-related error reports.