Today I was logged out of EFS-Web with no warning for timing out after approximately 15 minutes.
Nominally, it takes at least 30 minutes of no activity for a log-out. But I have received the log-out warning or been logged out for no activity WHILE I was uploading documents.
The PTO's explanation notes: "Note that a logout will automatically occur when your session times out based on the defined user timeout value."
The "user timeout value" needs to be fixed to be consistent, and to be at least 30 minutes every time.