If you haven’t got a rear wiper, use rain x on the rear window.
I use RainX on my windows and i have a rear wiper,but that does’nt stop the coating of mist you get most mornings on all the glass.
Hyundai have put the rear wiper on the facelift car because they know its the best option having listened to owners,there is a YT video from SK with the facelift car and that was the info relayed to watchers.