I want to be able to switch my keyboard layout between German and English (UK). As default I set it system-wide to English (UK, extended WinKeys), using
sudo dpkg-reconfigure keyboard-configuration
So far it is working. Now to be able to switch, I go to KDE's keyboard settings and set my two desired layouts: the UK one and the German one (dead acute).
I am now able to switch between the two of them using the icon in the systray. The weird thing is, I don't actually get what I am selecting: When I set it to English, it actually results in a German layout. When I set it to German, I am typing Japanese katakana (カタカナ).
In the past I used fcitx to type Japanese, so maybe there is some configuration messed up. I did a complete reinstall of the OS yesterday (using Kubuntu 16.04 now), however I kept my home directory with all the configuration files. I did not reinstall fcitx but the problem is still there. I deleted .config/fctix but it did not change anything.
I guess there is still something messed up with the config files in my home (since everything else was wiped by reinstall) but I have no idea where to look.