I think I can shed some light on this. I knew about this quirk a while back. Years ago people wanted a toggle 'on' and 'off' box for the "Go back" button from the editor. It was heatedly debated, but 3J, and most sane people too, were against it. During that time I recommended a compromise that people seemed to like. I wanted a counter that would track the number of times the button was used. This would allow us to see who used to the "Go back" button and who didn't for games with high scores. It also allowed us some measure of insight into how much a reviewer explored a story before leaving a review.
So here comes the more pertinent part of my reply. We discovered that the suggestion could not be implemented. The "Go back" button uses the same function as "ALT + Left Arrow" or just pressing the back arrow on your browser. Basically, it retrieves the page because you were just there, not by actually backtracking where you came from. The story viewer, if I understand correctly, has no way of knowing otherwise where you came from to get to a page. Hence, you can't backtrack from saved games.