This is not a big deal, but it's just sort of a nag thing and I'm wondering if it's fixable. I use Tiddlywiki with Firefox, but because of a bug in Tiddlywiki, you need to use an extension called Tiddlyfox; if not, you can't save any changes you make to your wiki file.
This extension seems to leave some sort of null cookie behind in order to do this; CCleaner detects this cookie and removes it, but I can't seem to prevent it from doing that because it does not show up in the list of detected cookies or list of cookies to keep.
Here's a quick log demonstrating what I see:
ANALYSIS COMPLETE - (0.222 secs)
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4.94 MB to be removed. (Approximate size)
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Details of files to be deleted (Note: No files have been deleted yet)
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Firefox - Cookies 0 KB 5 files
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Removed Cookie: apis.google.com 0 KB
Removed Cookie: 0 KB
Removed Cookie: www.filehippo.com 0 KB
^^^ You can see there's an unnamed cookie here, and when I run the cleaner, I lose my Tiddlyfox settings for any Tiddlywiki files I've edited and saved preferences in. If I don't run the cleaner, I can close and reopen my browser as many times as I like without losing my settings, so I'm confident this blank cookie is where the settings are saved. I know it's sort of a hacky extension to begin with for an edge case of an edge case, but if there's any way to whitelist this blank cookie, it would make things a lot easier!
Thanks for reading.