I feel a little bit stupid now-
The reasons I thought it was broken are: in Cubeheads video on 2-gen, the scramble is only R and U, the scrambles he shares are made of R and U, and the scramble settings (the one on the top middle of the screen) doesn't work for the ones I thought were broken, but the ones I thought weren't broken had working scramble settings.
Well now that my first issue is solved, does anyone know why the scramble settings don't work? (The one in the top middle of the screen.)