I run CCleaner on Windows 7 and Windows 10 platforms. Before, when I ran back to back cleans, the number of files removed diminished. This made sense.
Now, after the most recent update, running back to back cleans does not result in a no more files left to delete scenario. This does not make sense.
For example, every time I run the cleaner on my laptop, a new clean straight after the previous one, it reports that about 110 tracking files have been deleted.