ilovewaterslides said:

The 2004 edition was so badly done. You can actually see the tail of the '97 Jabba during the transition in the scene where he talks with Han.

http://i1.someimage.com/bGksBr9.jpg

See?

Yeah because they didn't want to re-do the wipe again. The 1997 disolve is the one in the o-neg now. You'll notice though that the rest of the shot they began with the clean Jabba-free frames and then stitched it back together with the film (so in fact what you're seeing in that frame is a dissolve into the 2004 version put on top of the 1997 dissolve). As people have noted it's barely noticeable especially when you compare it to the transparent ship example I gave which is in the O-OT.