Avast Internet Security 2015.10.2.2214 (Windows XP SP3)
1) Start any scan for viruses.
2) Infection found -> avast is switching to "aggressive (red)" scan mode.
Now there are white dots on the progress circle (one dot per infection).
It is normal, I know.
3) Press pause button /OR/ Go out from scanning interface and then return back
(for example press "Overview" and then "Scan"->"Scan for viruses").
4) Now all white spots are moved to the current scanning position.
See screenshots.