When you push Ctrl-Alt-F3...1...2 to switch to another console nothing happens. The sreen just goes black and
you can't come back to whichever one you started with. The only fix so far is the dreaded reset button on the front of my case.

When I created a user after finishing with the install.I have logged out and history repeated itself with black screen instead of a graphical
login. I confirmed that it was a regular occurrence every time you log out.