Folder privacy not working

This morning I noticed that the option to add/remove apps is grayed out in:

System Preferences > Security & Privacy > Privacy > Files and Folders

Yes, I unlocked the padlock first.

Then I discovered that while the Python App only shows access to Documents folder, I can save to other folders as well, e.g., Desktop, Downloads, etc.

I next started an app, Sublime Text, for the first time, and I was not prompted about folder permissions.  I was able to save files anywhere under my user folder.

In Terminal, I ran:

% csrutil status

System Integrity Protection status: enabled.

% spctl --status

assessments enabled

How do I get folder privacy protections working again?

Thanks!

macOS Catalina 10.15.4

2019 16" MacBook Pro