Software update for Pixel 9 Pro this evening caused the CCleaner pro to become disfunctional. Cleaner is very slow, repeats cache cleaning on apps but does not clear cache at all. Uninstalled CCleaner and version 26 reinstalled with all permissions granted but problem is not resolved.
This is a known bug, though thank you for your input. The developers are aware that with the latest android 16 (qpr3) ccleaner acts like it is going through everything, but caches remain untouched. However, there is no announcement of when this will be fixed.