use a window manager with a virtual workspace;
run galeon somewhere in the second row of windows; full-screen galeon.
Now go to the workspace above galeon - you'll see the window decorations
there at the lower edge.
Works with Sawfish 1.0.1.20020116 here, gnome 1.4

It would be nice if galeon could remove the window decorations, so galeon
stays on the workspace it was full-screened on.

Note: this is not the same fullscreen bug as reported by others before: the
window decorations are not on the same screen as galeon; fullscreen seems
to work at first.
So this IS different from #69734: the statusbar is here, the whole screen
looks right - just the neighboring virtual workspaces do not.