SUMMARY With KMail these happen only when used via Kontact; with KOrganizer and KAddressBook, they also happen in the standalone applications. - After I change some setting (e.g. User Feedback levels in KOrganizer and KAddressBook) and clicking the Apply button, it stays enabled, no matter how many times I click it. - If I change some setting and switch to a different settings panel, the dialog asking whether I want to save the changes is shown twice; I have to click Apply/Discard/Cancel twice to make it go away. - In some cases, the Apply button is already active when opening the settings, and if I go to a different settings panel, it asks whether I want to apply my settings even if I don't change anything. In these cases, changing something and then changing it back sometimes (e.g. changing checkboxes in Mail/Appearance) disables the Apply button and the confirmation dialog, i.e. it seems to make it realize that the settings are unchanged. - Conversely, sometimes if Apply is disabled at the beginning, and I toggle some checkbox and then toggle it back, Apply remains enabled, even though that normally disables it in other KDE applications, and sometimes in Kontact itself. STEPS TO REPRODUCE (example, part of the bug) 1. Click Settings/Configure Kontact 2. Go to Calendar/User Feedback 3. Optionally change the settings. 4. Click Apply a bunch of times. 5. Click (e.g.) Calendar/Plugins, as an attempt to go to a different settings panel. 6. In the Apply Settings confirmation dialog, click Apply. OBSERVED RESULT After 2., Apply is enabled despite not having changed anything yet. (Because of this, Step 3 is optional.) After 4., Apply remains enabled. After 6., the same dialog is shown again. You have to dismiss it a second time to make it go away. EXPECTED RESULT After 2., Apply is disabled. After 4., Apply gets disabled. After 6., the settings are saved, and the chosen settings panel is shown. SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20240929 KDE Plasma Version: 6.1.5 KDE Frameworks Version: 6.6.0 Qt Version: 6.7.2 Kernel Version: 6.11.0-1-default (64-bit) Graphics Platform: X11