STEPS TO REPRODUCE 1. Press Ctrl+Shift+Del OBSERVED RESULT Thread (perhaps with just a single message) is deleted permanently and not moved to the wastebin. EXPECTED RESULT If Shift+Del is pressed, a popup dialog box appears: "Do you really want to delete the selected message? Once deleted, it cannot be restored." I would expect there to be a similar warning for Ctrl+Shift+Del. SOFTWARE/OS VERSIONS Kubuntu 21.04 KDE Plasma Version: 5.21.4 KDE Frameworks Version: 5.80.0 Qt Version: 5.15.2