regarding 1.) The attached branch addresses the gap-issue. The ReferenceError of LockScreen.qml no longer happens. The anchor-warning concerning Column can't be avoided without breaking the whole layout of notifications.
regarding 2.) This is probably due to the menu-model on DBus going missing upon Ctrl-C. If someone shows me how to catch that inside QML, I should be able to gracefully exit the notification.
regarding 3.) I've never seen that or been able to reproduce such a lockup.
regarding 1.) The attached branch addresses the gap-issue. The ReferenceError of LockScreen.qml no longer happens. The anchor-warning concerning Column can't be avoided without breaking the whole layout of notifications.
regarding 2.) This is probably due to the menu-model on DBus going missing upon Ctrl-C. If someone shows me how to catch that inside QML, I should be able to gracefully exit the notification.
regarding 3.) I've never seen that or been able to reproduce such a lockup.