While jade plants can grow in full sun, it is possible for them to suffer from overexposure. Heat can also be a problem for them. I realize that fluorescent lights don't produce nearly as much heat as incandescent bulbs, but it might still be more than the plant likes.
If it isn't feasible for you to leave your jade in the window, where it seems to be happiest, would it be possible to move it farther away from the fluorescent tubes?
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams