Created attachment 172035 [details]
change window focus

SUMMARY
plasma spams journalctl with the line kf.svg: findInCache with a lastModified timestamp of 0 is deprecated when the window focus changes to another window. Only with QT apps.

STEPS TO REPRODUCE
1. Use read-only /usr (Fedora Kinoite)
2. open 2 Konsole/QT windows next to each other (doesn't happen with GTK)
3. run sudo journalctl -f
4. repeatedly change window focus to another window with mouse (focus settings where you don't have to click make it worse) 

OBSERVED RESULT
$ sudo journalctl --since=yesterday | grep -i "kf.svg: findInCache with alastModified timestamp of 0 is deprecated" | wc -l

returns: 128182
this is not a typo (over hundred thousand) entries only since yesterday
this is about 108 times per minute for me at the worst.
this makes it really annoying to browse your journal/logs

EXPECTED RESULT
???

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora Kinoite 40
(available in About System)
KDE Plasma Version: 6.1.3
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION
seems to be related https://invent.kde.org/frameworks/kservice/-/merge_requests/87