Language not immediately switched when virtual site is switched

42 b7017

I've two virtual sites which have different default languages. When I change the current virtual site in the admin center, the screen isn't refreshed to be displayed in new current virtual site default language as done in 5.x . When I navigate the admin center, language isn't changed, so it isn't just a refresh problem. So, to change the current language, I've to leave admin center after changing the virtual site, and then come back to admin center. Then, admin center is displayed in current site default language.
Is it possible to backport from 5.x ?