There is some sort of user switching feature that isn’t working properly on my children’s computer and I don’t think it’s fast user switching because that account didn’t have fast user switching enabled. The issue is that I was presented with a login screen where I chose a user which had a check next to it indicating that it was currently logged in. I entered the password and was taken to the finder for that account. After about 1 second, the screen transitioned back to the login screen (the transition effect was a cube turning to a different face). Unfortunately, I am unfamiliar with this feature and don’t know how to fix it. I searched around in System Preferences, but nothing popped out at me. Can anyone tell me what this feature is called?