kfontview fails to find kfontviewpart.rc, thus menu options defined by the KPart are unavailable. The file is installed to /usr/share/kxmlgui5/kfontinst/, but kfontview is looking for it in/usr/share/kxmlgui5/kfontview/ instead.
I had same: kf.xmlgui: cannot find .rc file "kfontviewpart.rc" for component "kfontviewpart" kfontview looks here (in this order): ~/.local/share/kxmlgui5/kfontviewpart/kfontviewpart.rc /usr/share/kde-settings/kde-profile/default/share/kxmlgui5/kfontviewpart/kfontviewpart.rc /usr/local/share/kxmlgui5/kfontviewpart/kfontviewpart.rc /usr/share/kxmlgui5/kfontviewpart/kfontviewpart.rc but the actual file is here: /usr/share/kxmlgui5/kfontview/kfontviewpart.rc Fixed by: ln -s /usr/share/kxmlgui5/kfontview /usr/share/kxmlgui5/kfontviewpart This also fixed this issue: https://bugs.kde.org/show_bug.cgi?id=446207
CONFIRMED both the problem and the fix Manjaro LTS Kernel 6.6.65-1 KDE Plasma 6.2.4 on X11 KDE Frameworks 6.8.0 Qt 6.8.1 (In reply to Andrew from comment #1) > Fixed by: > ln -s /usr/share/kxmlgui5/kfontview /usr/share/kxmlgui5/kfontviewpart