Affects me too. Switching users is still possible, it's just missing from the indicator applet.
A couple of possible workarounds in http://ubuntuforums.org/showthread.php?t=2326209&p=13505357#post13505357 Comment #7. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1577049 Title: The switch user feature has disappeared from indicator applet since upgrade from 15.10 to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1577049/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs