Edge Kiosk mode does not respect languages selection

Hi,

I start Edge in kiosk mode using options " --edge-kiosk-type=fullscreen --no-first-run"

It seems that Edge does not respect language preferences. If I start normal Edge, or InPrivate mode, it applies languages preferences (localized websites respond with right language). If, from same user, I start in Kiosk mode, localized websites respond in English (the OS's languages).

Is this a bug? Any way to apply custom language selection?

thanks