Installation of ubuntu-desktop totally changed KDE5 desktop

[Tommy_CZ]

After I installed ubuntu-desktop, everything in my KDE5 desktop is different, icons are switched, fonts are bigger, everything is literally fuc...d up :)

And Unity cannot be started.

Macbook Air.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-desktop 1.361
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Jun 11 23:13:55 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-11-26 (197 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
ProcEnviron:
 LANGUAGE=
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-meta
UpgradeStatus: Upgraded to xenial on 2016-05-03 (39 days ago)