I have used CCleaner for years, mostly with IE, and had few issues. A few weeks ago, I finally switched browers from IE to Edge and have been having problems with CCleaner doing a little too complete job of cleaning. In addition to wiping some protected cookies, it has been deleting my favorites list. Since I just switched browsers and IE is still installed this is not such a huge deal because I can just import my old bookmarks again, but it will be problematic soon.
I had a similar problem with CCleaner erasing things it shouldn't have when upgrading from 5.22 to 5.23 and was advised to roll back to 5.22 (which I did). I note that the upgrades to 5.24 are silent on any cure for these issues. Is it perhaps peculiar to certain versions of Windows? I am on Win 10 Pro with a 64 bit architecture and mostly running just vanilla MS applications so there should be nothing too strange other than the OS.