The stock has been stagnating for several months now, while the market has been rising. As so often (and cyclically), the company is suffering from public disenchantment with junk food. It has to be said that the company had outperformed for many years before this mini-crisis. So this should be seen as a return to normal.
MCD remains a very fine company. In 38 years of increasing its dividend, it has already been criticized many times and has had to review its strategy in order to relaunch itself. And it has succeeded every time.
I'm not worried at the moment. At least not as long as she can continue to grow her dividend. And there's no reason why it shouldn't.