SUMMARY STEPS TO REPRODUCE 1. Add several panels on different monitors 2. Add System Tray to every panel 3. Receive notification OBSERVED RESULT a) In case when all monitors are connected, there are X notifications for each notification, near each system tray b) In case one or more monitors are disconnected, there still are X notifications, on main screen in various corners. EXPECTED RESULT Every system tray should have a configuration item to disable notification display on this given tray plasmoid. SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.15.3 KDE Frameworks Version: 5.56.0 Qt Version: 5.12.0 ADDITIONAL INFORMATION
Right-click the notification icon > Configure Notifications should allow you to disable notifications for this icon. Please test if this fixes your issue.
Yep it does.