After performing a clean, there are often tracking files left. Only on a few occasions they are all cleaned.
Even cleaning several times in a row doesn't solve the problem. This issue exits for a while in different versions of CCleaner, always expecting that this would be solved in the newest update.
Don't worry too much about it, and it isn't a bug to be fixed, it's the way a computer works. - I'll explain why.
These files are not actively 'tracking' you in the way most of us would regard 'Tracking'.
(ie. Getting your physical location and following you around).
But they could be read and used to 'track' your previous computer activity, eg. your browser history, or what you have downloaded.
So it all depends on just what you mean when you say 'Tracking Fil