Yesterday, I was making my favorite loaf of Country Style French Bread. I let the bread rise in the oven. The first rising went fine. The loaf was punch down, put in the pan & rose beautifully the second time. I took it out the oven to preheat the oven, and the loaf immediately fell!! Just flattened out almost 2"!! I've never had this happen before & I've made this bread at least 10 times. Now I did let the loaf rise more on the 2nd rising than than I usually do, simply because I forgot about it. Could that have been the cause of it falling? The bread still tastes great. It's just sort of flat, only about 2 1/2" tall.