Broken links to tutorials
The links for "Tutorials" on the main Glade page (https://glade.gnome.org/) leads to a wiki (https://wiki.gnome.org/Apps/Glade/Tutorials) which leads to (http://tadeboro.blogspot.com/) which leads to (https://blog.borovsak.si/) which is not there.
In short, "Tutorials" doesn't work.