Hi, notification plugin triggers coredump if system shutdown with claws running if notification plugin unloaded then no coredump triggered See /var/log/messages section below Jan 31 15:31:23 fred kernel: traps: claws-mail[5266] trap int3 ip:7fd12e4835c5 sp:7ffda566a1b0 error:0 in libglib-2.0.so.0.5600.4[7fd12e430000+116000] Jan 31 15:31:23 fred systemd[1]: Started Process Core Dump (PID 5296/UID 0). Jan 31 15:31:23 fred plasmashell[4914]: QQmlExpression: Attempted to evaluate an expression in an invalid context Jan 31 15:31:23 fred plasmashell[4914]: QQmlExpression: Attempted to evaluate an expression in an invalid context Jan 31 15:31:23 fred plasmashell[4914]: file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml:77:5: Unable to assign [undefined] to QObject* Jan 31 15:31:23 fred plasmashell[4914]: file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml:132: TypeError: Type error Jan 31 15:31:23 fred plasmashell[4914]: QObject::disconnect: Unexpected null parameter Jan 31 15:31:24 fred systemd-coredump[5297]: Resource limits disable core dumping for process 5266 (claws-mail). Jan 31 15:31:24 fred systemd-coredump[5297]: Process 5266 (claws-mail) of user 1000 dumped core. Jan 31 15:31:24 fred systemd[1]: systemd-coredump@3-5296-0.service: Succeeded.