I traced an ugly bug downto kirigami2-git. It crashes many QML sys settings in KDE plasmashell.
how to reproduce:
- wreck your KDE by installing kirigami2-git on a Manjaro with otherwise non-git plasma stuff
- evoke crash with: kcmshell5 kcm_icons
- repair KDE by replacing the package kirigami2-git with kirigami2 , i.e. NON-GIT
Of course, all that Dr. Konqi business is nonsensical to use here, as always.