I've noticed the first several boutiques in the game have stopped rotating their wares. This includes Laverre City, Santalune and Cyllage. However the other stores, such as Lumoise, still rotate their inventory every day.
At the beginning of the game I had the clock set ahead a few days (thanks to Animal Crossing) but I have since kicked the clock back, and the real time is now later than the latest the "wrong" time was set.
Why have the stores stopped changing? Does this mean there is nothing more to buy there or is this a bug or what?