In fcitx configuration window, by default only imput method/keyboard layout of current languages can be added. To add input method of other languages, I must uncheck the box "Only show current language". But in openSUSE Leap 42.1 (also in Tumbleweed version 2015091x and later), fcitx will crash if this box is unchecked, without bug report window or any crash log in ~/.config/fcitx/log