A sleeping browser tab recovers its session

If a laptop slept through the moment the web app renews your sign-in, every request after waking was refused until you reloaded the page. The app now renews the session at the first refusal and repeats the request, so an open tab keeps working; if it cannot, you sign in again and land back on the page you were on. Also on the web, dates and numbers now appear in Japanese, Korean, Vietnamese, Dutch, Polish, Croatian and Swedish, where some screens failed to show them.