I tap on with this thread to avoid duplication of report since it's a similar issue encountered.
Noticed the issue started days ago after Google Chrome updated their latest version (Version 96.0.4664.93 - 64 bit) on 11-Dec-21.
Usually when I run the CCleaner, it will clear-off all cookies captured under "all cookies and site data" section at Google Chrome without any problem, but somehow this process does not work anymore since Chrome released their latest version of update.
I have try using the older and latest version of CCleaner (V5.63 & V5.87) to see there is any different or not on the outcome and results given the same.
The CCleaner's cleanning status shown that cookies were cleared. However, when go to Chrome's setting and check the "All cookies and site date", all cookies captured from each of the sites visited remains there. Best part is when open my gmail account, the site will just pop-up directly without the need to sign-in as it wasn''t logged off at all. Only way to clear off those cookies is throught a manual method via "Chrome History" setting.
On the other hand, I also tried out with another machine using Microsoft Edge Chromium, by repeating the same process as above and result shown differently with all cookies deleted successfully and history record all wiped out clean. The issue proven only happened with Google Chrome.
The above situation with Google Chrome was not happened before (for years since I started using CCleaner) and I really no clue what went wrong here based on the quick test I had done with different internet tools giving the same issue using CCleaner.
Hoping someone from technical group can take a look on this issue and address with a quick fix if it is related to CClean.