Indeed I can see the rules you mention in /etc/apparmor.d/abstractions/base, which is included by /var/lib/snapd/apparmor/profiles/snap.chromium.chromium.
However I can reliably reproduce the issue, and I'm seeing the following denial: AVC apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/home/ubuntu/.Private/" pid=11167 comm="pool" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1848919 Title: [snap] Permission denied on Private encrypted folder Status in chromium-browser package in Ubuntu: Confirmed Status in snapd package in Ubuntu: New Bug description: When accessing the Private (/home/username/Private, Encrypted Directory) folder (e.g. via "Link save as...") it shows "Could not read contents of Private, Error opening directory ...: Permission denied" Package: chromium-browser Version: 77.0.3865.120-0ubuntu1~snap1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1848919/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp