Reported in Debian bug system: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=921032 In normal situation (no full-screen application is running), when I hit defer button, new window opens with some deferring options. The deferring window is over the alarm window and all buttons works well. When full-screen application is running and alarm appears, window frame is missing and when I try to defer alarm, new window is opened, but it is under the alarm window and many times there is no way to press any button. It is because of old (alarm) window buttons are not working, and new (deferral) window is hidden under it. SOFTWARE/OS VERSIONS Debian 9.7 KAlarm 2.11.7 KDE Applications 16.04.3 KDE Frameworks Version: 5.28.0
Fixed for KAlarm version 2.13.1 (KDE release 19.12.1), by commit 870c2a6173d83b1989e948bdfb97cf0c2f9bb886.