ncurses does not support utf8
Applications like tig and irssi (which are ncurses based) do not seem to
support proper UTF-8 suppport.
Seems like there is something wrong with ncurses.
Easiest to reproduce is:
apk add tig
git clone git://git.alpinelinux.org/apk-tools
cd apk-tools && tig
Timo’s last name should display wrong.
(from redmine: issue id 2268, created on 2013-10-07, closed on 2014-05-30)