> Most desktop environments will allow windows to supply their own decorations if they wish but will provide a default implementation on the server side as an alternative. GNOME, in their infinite wisdom, have decided that all clients must provide their own decorations, and if a client does not, they will simply be missing

I'm sure there was/is a good reason why this design decision was made, but it certainly seems a bit odd. Imagine if every game had to write decorations for every platform and desktop environment...