In the akonadi dialogs, the Apply button is never deactivated. STEPS TO REPRODUCE 1. Open KMail. 2. Go to Settings -> Configure KMail -> Plugins. 3. In the Akonadi Agents group, select Notifications about new mail. Press its settings button. 4. A new window appears titled Notifications about new mail Configuration - KMail. OBSERVED RESULT It has already active Apply button. When you change some setting and press Apply, it still is active. EXPECTED RESULT The button should be disabled when no modifications are yet made. I.e. when just opening this window and after applying settings. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.109.0 Qt Version: 5.15.10 Graphics Platform: Wayland KMail: 5.24.0 (23.08.0) ADDITIONAL INFORMATION Some other dialogs also have always active Apply button. For example: - Agent of archiving mail - Agent of remind of continuation Note that I translated them myself, because these are not respecting application's locale.