Miscalculated File Size

Hi Folks

I had used CC Cleaner on another computer and it has always helped me. I downloaded recently and noticed an oddity in one particular function that I like to use5bde42600a97e_filesize.thumb.jpg.115ce92e2c9a57c0d681c5107da6a342.jpg - finding large files

The file size calculation look stratospheric on certain files in the thousands of terabytes which is impossible. The actual file top shown in a minuscule 3869 KB

Anybody else have this issue?

Yes, I have the same issue on my Surface with Win10. I posted a similar question, with no replies.