1. System settings 2. Region and language 3. Try to change time from US to Italian 4. System says "Could not find the system's available locales using the localectl tool" and suggests to file a report Fedora KDE
Same here with Fedora Kinoite. The relevant code is https://invent.kde.org/plasma/plasma-workspace/-/blob/master/kcms/region_language/kcmregionandlang.cpp#L96. Running "localectl list-locales" shows the locales. However, it does so via less (?). Maybe "--no-pager" is required?
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/4579
*** This bug has been marked as a duplicate of bug 479213 ***