Multiple times, I would start referencing a class, and then preview the webpage with next dev run and notice that the style I was expecting wasn’t applied because the class that I referred to was undefined. Then, I would stop the dev server, disable jit, and start next dev again and notice that the purging/compiling did include the new class and the style that I was expecting was visible. This happened to me about five times over the course of a few days, and I just didn’t want to spend any more time trying to figure out what was failing.