I had 2 keyboard layouts, English UK and Russian, for some reason English US was added by itself and I can't find where to remove it.
I didn't add it by myself and never changed keyboard layout since I first set the settings, when I just bought the laptop. Haven't had troubles with it and didn't need to change it ever. The system (display) language is English UK. The region is Russian, but it didn't change anything and I don't it is related to this problem, because there were 2 weeks between me changing it and this issue appearing.