CCleaner v5.64.7613 has a cleaning duplication doubling bug I've been able to reproduce on three separate occasions:
Using <strong>Custom Clean</strong>, and then clicking <strong>Analyze</strong> it will sometimes <strong>duplicate</strong> and <strong>double</strong> what it states it can clean.
It will show two identical results for things like built-in default cleaners such as; Internet Explorer, Temporary Files, etc., and also this doubles the amount of disk space it shows will be reclaimed.
Closing CCleaner, and starting it again remedies the issue, until it happens again.
I have the same problem, Happens occasionally when I open CCleaner. Does not do it all the time, but does the same thing on 5 different computers. I close, then reopen the program and it is OK.
Unfortunately that's not the only problems the new version has, it's at least "cosmetic" but enough of a hassle to warrant downgrading to the previous version which was nowhere near as buggy.