Very interesting. Those must be relatively new, as I don't remember seeing them before.
Thanks for your response!
I have Cookie v5.9.2 running in Mac OS Mojave v10.14.1 with Safari v12.1 and Firefox v63.0.1, and all appears to be working as expected with Cookie removing non-favorites, and tracking cookies.
However, there are at least a dozen items that Cookie is showing, that it appears it can't remove automatically or manually. When I select any of them and click Remove, nothing appears to happen as the items remain.
What are these items, and how can I configure Cookie to remove them?