N360 in-scan, post-scan "risks resolved" discrepancy

Ever since I moved to Norton 360 version 21 (21.7.0.11, to be exact) from version 20, I've noticed that the total number of "security risks resolved" shown while the scan is running, is invariably larger than the number of "security risks resolved" shown in the history for that scan. Typically, the history says that it resolved 0 or 1 risk, whereas almost every time I'm watching the scan in action it shows a much larger number -- say, 5 or 8 or 14.

Is this a known bug? I run N360 overnight and am not always around to see how many issues it actually found and fixed.

Below are screenshots of the N360 in-scan and post-scan results, so that you can see what I mean: