Some new KDE apps does not work on Nexus 5.
I'm sorry to have to report bad news.
I just upgraded my system and installed new KDE apps on my nexus5. All mauikit apps fail to start (vvave,index,pix). And when Index is installed, terminal starts as a white page.
Doing sudo mv /usr/lib/qt5/qml/QMLTermWidget/ /root/
Makes the terminal work again. If after that I try to start Index, vvave or pix from terminal, they all crash with segmentation fault.
Good point: Okular, and kubes seem to run well!