Comment # 3 on bug 1099778 from Honza Nijak��

(In reply to Michal Srb from comment #2)
> I was not able to reproduce it on Tumbleweed or Leap 15.
> setxkbmap "cz(ucw)"
> Shift+W = ��
> Shift+S = ��
> 
> But I assume you do not use "cz(ucw)" alone, but as a secondary layout in
> addition to normal Czech layout and switch between them with some hotkey.
> Maybe the combination of the hotkey and shift is what got broken?

Yes, I use the layout in this combination:
setxkbmap "us,cz(ucw)" -option grp:caps_switch

The weird thing is that as I wrote, other keys work normally.