Comment 2 for bug 160669

Despite the fact that I'm using Xfce and not Gnome, this problem is not Xfce-specific.
I have this same problem with gnome-screensaver package as well as the xscreensaver package.

The file I edited was ~/.xscreensaver and the line I added was as follows:
        "Langton's Ant" ant -root n\

The problem sounds like it's in the default version of this file not having this line.
(and I've checked, this is the proper name for this saver)