Thanks for taking an interest in this; it's got me baffled, for sure.

I think your answer is correct but, honestly, I'm not sure. I set a breakpoint at another line that I know is executed and got the proper behavior. However, I also got the proper behavior on the breakpoint that is shown in my example - it did not turn into an outline breakpoint and the app stopped there. I'm going to mark your response as the answer, and I thank you for pointing out what you'd encountered. I appreciate your help!