Comment # 14 on bug 1120957 from Rodion Iafarov

(In reply to Josef Reidinger from comment #12)
> (In reply to Lukas Ocilka from comment #11)
> > We've been recently changing the behavior here:
> > https://github.com/yast/yast-country/blame/master/keyboard/src/modules/
> > Keyboard.rb#L1470
> > 
> > Josef, could it be related?
> 
> No, it looks properly escaped when I see this cmdline. Here really looks
> like problem with opening /dev/tty.
> 
> Does this device exists on given system?

I'm not sure if I fully got the question, but /dev/tty is reflecting Current
TTY device. If that works properly, I tried echo "123" > /dev/tty and got that
on currently selected tty, so works fine.
Also, as David has helped us to find, it's easy to reproduce on qemu, but not
on virtualbox, for example.

Let me know if I can help with more info.