@SweetP That appears to have worked, although it seemed to get into a loop removing the Sandbox permissions and I quit it via Activity Monitor.

I removed Cookie using AppCleaner and threw in a system restart after deleting it for good measure.

Things appear to be back to normal

Running macOS 12.3, Cookie just updated last night via AppStore, now continually asks for access to ~/Library/Preferences/Macromedia (which is an empty directory). I allow access and it simply asks again. Canot quit Cookie through menu. need to quit through Activity Monitor command

I am currently running without Cookie, which is a pain in the tailbone

@SweetP no, I am not running in private browsing mode.

Something eventually shook loose and I am back running as I want with 3 browsers enabled for automatic removal.

@SweetP Hey @SweetP,
Wanted to update that I stopped the app, removed the permissions, removed application (using AppCleaner), restarted my computer, downloaded the app from the App Store.
Now I can not even enable Safari (Firefox and Chrome are OK), and it STILL does not recognize that it has "Full Disk Access" granted

@SweetP Its been 4 days since I answered your question. Any ideas?

@SweetP Yes it does. But it has a creation date of today. Unless it is destroyed at browser quit I would have expected it to have an older creation date

I had this problem after initially upgrading to Cookie6 but it was resolved.

BUT NOW, after allowing AppStore to upgrade me to 6.0.12, I am back in the loop of having to grant access.
System level is macOS 10.15.3
Cookie does have full disk access. I have quit Cookie, removed disk access, restarted system. Doesn't help.
I have had to disable Cookie to get ANY work done.