Created attachment 729294 [details]
Screenshot

In SDDM we can see two options to select KDE session:
KDE Plasma Workspace
Plasma 5

This comes two almost identical files in /usr/share/xsessions/
from plasma5-session package:



plasma5.desktop

[Desktop Entry]
X-SuSE-translate=true
Encoding=UTF-8
Type=XSession
Exec=/usr/bin/startkde
TryExec=/usr/bin/startkde
DesktopNames=KDE
Name=Plasma 5
Comment=Plasma by KDE
X-KDE-PluginInfo-Version=5.8.7




kde-plasma.desktop

[Desktop Entry]
X-SuSE-translate=true
Encoding=UTF-8
Type=XSession
Exec=/usr/bin/startkde
TryExec=/usr/bin/startkde
DesktopNames=KDE
Name=KDE Plasma Workspace
Comment=Plasma by KDE
X-KDE-PluginInfo-Version=5.8.7



Suggest to remove one of them, KDE team should decide. 
If needed, suggest to use symlink