This might be considered a suggestion or a "glitch report" (less than an actual bug, but in that general area).
When you right-click an application in CCleaner's main window, you are given the option to "Analyze" - so Ccleaner only analyzes data pertaining to the selected application. Great. But when you choose "Run Cleaner" from the same context menu, CCleaner goes and cleans data for ALL applications. In my opiinion, this is slightly inconsistent and might occasionally lead to loss of data (premature, unintended cleaning of other unrelated items, such as a browser cache/cookies).
I think the "Analyze" and "Run Cleaner" items in an application's context menu should both only deal with data from that application. The two big buttons are already there for global analyze/cleanup operations.