STEPS TO REPRODUCE 1. Create a notification, e.g. with "https://www.bennish.net/web-notifications.html" 2. While notification is present in a corner, close it, or just click on it. 3. Open notification history... OBSERVED RESULT ...it's empty EXPECTED RESULT ...but it probably shouldn't be. SOFTWARE/OS VERSIONS KDE Plasma Version: 5.15.90 KDE Frameworks Version: 5.58 Qt Version: 5.13.0 beta3 ADDITIONAL INFORMATION Tested on wayland.
That's by design. You interacted with the notification so you explicitly acknowledged it which means there's no point in keeping it in the backlog.