Is This a C11 Bug or Am I Just Missing Something?

So normally, when I am playing back, I click the Stop button once to stop, and then I click the Stop button a second time and it takes me back to where I started. At least in my copy of C11, this no longer happens. I have “Return to Start Position on Stop” unchecked in preferences. I don’t know what else it could be except a bug. Any others?