Let me preface this by saying I was a "sandwich artist" once.
I ordered a meatball sub and typically they ask what kind of cheese you would like first so it can save the bread from the sauce so it doesn't get all soggy. The lady didn't do it in this order AND put the meatballs right at the weakest part of the open bread - right in the middle. Needless to say, when I got home 5 minutes later, the food was still hot but the sandwich was a sloppy mess. I lost meatballs left and right and eventually just ate with a fork.
I'm hoping that this isn't another change in procedure at Subway - I was very sad when they got rid of the U-cut, though it is understandably hazardous for all parties involved.. Meh, I still cringe at the memory of soggy bread!