Can't get Japanese input working

[Niels Kobschaetzki]

Hi,

I used Japanese input in Fedora23 before but after a reinstall because
of an intermittent distribution switch where I used fcitx I get punished
for cheating on Fedora. I just can't get ibus with KKC working outside
of urxvt.  In no GTK- or QT-app it will run.

I tried in my .xinitrc, .xprofile, .profile and .bashrc (apparently the
last is one is necessary for LibreOffice oO)

export GTK_IM_MODULE=ibus
export QT_IM_MODULE=ibus
export XMODIFIERS=@im=ibus

and

export GTK_IM_MODULE=xim
export QT_IM_MODULE=xim
export XMODIFIERS=@im=ibus

I grepped the .-files in my $HOME for fcitx and it doesn't seem to be
present anymore.
I tried i3 and Gnome. My main test-application is Chrome but I also
tested it in Firefox, Libreoffice, Skype, Keepass and Kate as a
QT-application. Nothing works and I can't find any messages in any
log. It would be nice to have Japanese input outside of my terminal
available. Any ideas?

Niels