Public bug reported:

This issue can be found in kubuntu 16.04 and 16.10, other version are
not tested

When text include east Asian characters, but the font do not include
glyph of those characters, text were cropped so part of a character is
invisible.

This issue exist in konsole, kate/kwrite, konquerer (when opening a text
file), but not in kmail.

How to reproduce:
Using the live CD, select a corresponding language (Chinese, Japanese or 
Korean), booting into desktop, opening konsole, and run `ls -l`. The rendering 
of the output text is abnormal.

Copying the output into kate and kmail, see the differences.

See attachments for demo.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: konsole 4:15.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CasperVersion: 1.376
CurrentDesktop: KDE
Date: Wed Feb 22 11:53:50 2017
LiveMediaBuild: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
ProcEnviron:
 LANGUAGE=
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
SourcePackage: konsole
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: kate (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: konqueror (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: konsole (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: font kdebase xenial yakkety

** Attachment added: "screenshot"
   
https://bugs.launchpad.net/bugs/1667187/+attachment/4824937/+files/Plasma5_FontIssue-apps.png

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https://bugs.launchpad.net/bugs/1667187

Title:
  Font fallback/rendering issue when CJK text appears

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