I always stumble upon the behaviour, that pressing the delete key (or backspace on mac), that an entry is only deleted from the actual collection. It is not put into trash.
IDK if this is just me, but I expect it to get deleted immediatly or put into the trash.

For me it would be great in my everydays tasks, to get this behaviour as an option. A simple checkbox in the settings menue would be awesome. :)

(Since I could not find it in the about:config it is not possible for me to set it up just for me)