I noticed the same bug sometime around September, running the then latest version of CCleaner and the latest stable version of chrome, I was using 32bit at the time. I still experience the bug with CCleaner 4.19.4867 64bit and the latest stable version of Google Chrome (38.0.2125.111 m (64-bit)). I think the bug is due to something changing in Chrome around version 37 or 38. I am on Windows 8.1 Pro. Hope this helps, and thank you!