What is really needed, is probably sometihing like "KDE config keeper/explorer/reverter". To keep your configs in .git on each KDE startup. And let you see what so smart had KDE done with each config at what time. And of course return that into some previous state when everything looked and worked well. As KDE and its apps are prone to do some voluntary and overly-intellectual reconfigurations and fallbacks which the user only has to guess about how to revert or "fallforward".