I went on a small road trip the other day and decided to play with the Sport mode. As others have pointed out, when I dropped into S at 55 mph it automatically downshifted from 6th to 5th gear. Hmm, not the desired result. I shifted back to 6th then floored it. Instead of staying in 6th gear it decided to shift down to 3rd and when it approached redline it automatically up shifted to 4th. Again not the desired result.
What the hell is the point of putting manual controls on there if the car doesn't let me decide what gear I want? It defeats the purpose.
I hope Ford addresses this issue in the next firmware update.