Testing with two users on separate Lubuntu lxsessions, on tty8 and tty7. First one (tty8) was logged out as expected and the Lubuntu login screen on tty8 was displayed after logout. Ctrl-Alt-F7 restored the second lxsession (tty7) without need to login again. My testing confirmed the reported bug.
Testing with two users on separate Lubuntu lxsessions, on tty8 and tty7. First one (tty8) was logged out as expected and the Lubuntu login screen on tty8 was displayed after logout. Ctrl-Alt-F7 restored the second lxsession (tty7) without need to login again. My testing confirmed the reported bug.