Cannot Log Out of guest User

Question

Ever since I upgraded one of our schools student MacBook Airs to Mojave, logging out of the Guest User account is broken. The cursor remains over a blank, black screen and nothing ever happens from there. To get it back I need to force a shut down by holding down the power button. I tried booting into Safe mode to see if that would help. It does not.

Answer 1

Disabling SIP with 'csrutil disable' solved the problem for me, although that doesn't reflect well on Apple or MacOS.