Unfortunately, it doesn't work anymore. This feature has been removed by GTK developers because of "this may surprise user" : https://bugzilla.gnome.org/show_bug.cgi?id=630226. It doesn't seem that they are going to reimplement it.
Unfortunately, it doesn't work anymore. This feature has been removed by GTK developers because of "this may surprise user" : https:/ /bugzilla. gnome.org/ show_bug. cgi?id= 630226. It doesn't seem that they are going to reimplement it.