This is shown on User Profile Notification settings:

Viewing that page as an admin with locale set to EN.
The user’s locale is RU.
This is shown on User Profile Notification settings:

Viewing that page as an admin with locale set to EN.
The user’s locale is RU.
Perhaps this is due to the fact that there is no translation?
currently_disanot are absent in RU
client.en.yml is the original and not the translation right? Or am I getting it wrong?
Should be fixed by UX: Remove unused strings about desktop notifications · discourse/discourse@a40e9d9 · GitHub. It doesn’t make sense to have empty strings in the English locale files.