There was a significant issue in the test in which some students received (randomised pool of questions) a question with correct multiple answer but could only select one answer - I dont know if this was the exact issue as I did not get that question in my pool, but this is what ws reported from some students.
Can't bring it up exactly but people say it was something like that.
"Which of the following statements is true about git?"
And there was more than one correct answer (whoops)