I you have an account with an encrypted home folder, you can't access the user's plain text data in their home folder if that user hasn't logged in, yet, since the system last booted up. This is what I expected because it should in fact not be practically feasible to access a user's home folder without their password being entered.
However, I found that when a user with an encrypted home folder logs in and then logs out, the plain text data in their home folder still is accessible to other users. Sufficient access privileges are required, of course.
w doesn't list the user and the output of
sudo pgrep -u <username> is empty, indicating that the user doesn't have any running processes.
What is the reason for this behavior? Why not just lock the user's home folder after they logged out?