One bug that comes to mind is when you edit your profile in Konsole and click Apply, then close Konsole, the setting is lost. But if you click Ok instead of App

One bug that comes to mind is when you edit your profile in Konsole and click Apply, then close Konsole, the setting is lost. But if you click Ok instead of Apply, the setting is saved. However, sometimes the setting is saved when you click Apply. I think this bug has been around for years now. Nothing major, but there are small annoyances like this that diminish my experience as a user. Still the best DE anyway.