I could not retrieve logs with the guide I followed because the affected
application use KDE libs 4, not KDE Framework 5.
I followed [1] and the moment I run
kdeinit4
Konsole showed some messages about ~/. files, but I haven't paid
attention to them. Suddenly the problem disappeared. I even tried to
relogin, reboot the system, but there is no way to reproduce it again.
This is very strange because I experienced it for ~ more than an entire
week...
Anyway, thanks to Rex Dieter and Pino Toscano
[1]:
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/Debugging_IOSla...