Comment 0 for bug 1334495

Bug:
In all desktop applications, two different fonts are mixed to display Chinese text. I attached a screenshot of a paragraph of Chinese text in Kmail - some characters are displayed using a "italic" font, others in a "normal" font. The same problem exists in other applications, for example Dolphin or even Konsole. In Xterm, only the "normal" characters are displayed, where Dolphin displays italic characters Xterm leaves a white space. Websites are displayed fine, if I open the same mail in the web interface only one font is used.

Background

I' am using Kubuntu 14.04 with the language set to German in KDE settings.
The output of "locale" looks a bit messed up, I don't know why, as in the KDE settings all formats are consistently set to German standard.
"locale
LANG=de_DE.UTF-8
LANGUAGE=de:en:zh:en
LC_CTYPE="de_DE.UTF-8"
LC_NUMERIC=zh_CN.UTF-8
LC_TIME=zh_CN.UTF-8
LC_COLLATE="de_DE.UTF-8"
LC_MONETARY=zh_CN.UTF-8
LC_MESSAGES="de_DE.UTF-8"
LC_PAPER=zh_CN.UTF-8
LC_NAME=zh_CN.UTF-8
LC_ADDRESS=zh_CN.UTF-8
LC_TELEPHONE=zh_CN.UTF-8
LC_MEASUREMENT=zh_CN.UTF-8
LC_IDENTIFICATION=zh_CN.UTF-8
LC_ALL=
"

fc-match:
┬╗DejaVuSans.ttf: "DejaVu Sans" "Book"┬ź

This is my first bug filed at launchpad. I filed it for language-selector as other related bugs I found were filed for the same package. If it isn't language-selector, perhaps you can point me to the right package?