Using i18nc() is fine: https://invent.kde.org/plasma/welcome-app/-/blob/master/src/contents/ui/pages/Discover.qml#L18 Using xi18nc() triggers the error in the title: https://invent.kde.org/plasma/welcome-app/-/blob/master/src/contents/ui/pages/Contribute.qml#L15
A possibly relevant merge request was started @ https://invent.kde.org/frameworks/ki18n/-/merge_requests/64
Git commit af2fda2ba4ca4b922f6045765a65f44b8fa34410 by Albert Astals Cid, on behalf of Chusslove Illich (Часлав Илић). Committed on 18/09/2022 at 19:12. Pushed by aacid into branch 'master'. Really support :usagetip cue On switch from kdelibs4 to KF5, the :tipoftheday cue to @info marker was deprecated in documentation in favor of new :usagetip cue. However the :usagetip cue was never actually added to the code. So it is added now. FIXED-IN: 5.99 M +4 -2 src/i18n/kuitmarkup.cpp https://invent.kde.org/frameworks/ki18n/commit/af2fda2ba4ca4b922f6045765a65f44b8fa34410