Then the problem lies with programs that do understand animated GIFs, and not those that don't! If the GIF software can navigate multiple frames, then it must

Then the problem lies with programs that do understand animated GIFs, and not those that don't! If the GIF software can navigate multiple frames, then it must know how to render them. Its only lazy programs that would export these incomplete frames by just copying the bitstream. A properly written program would export a full frame, made from the composites of the previous parts of the animation. The programs that are viewing these single frame exports are rendering them just fine, they were simply supplied with poor data.