I think I may have solved the problem.
Somehow the normal run button got replaced with the Run without debugging button. So far the best explanation is that when I had the problem was when I ran the program by hitting the Run button, and when it ran fine it was because I hit F9. I don’t remember changing it, and I don’t remember whether I hit F9 or the button each time I had breakpoints or not, But, now I am back in happy land.
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