OK - this just popped up on mine. I just added some extension to get quizzes to print but not sure which one is doing it. Did you ever find out what caused this?
I am having the same issue and I really need "google it" gone so that I can share a preview of a quiz with students! It's the only way to work around the quiz-printing or quiz-pdf issue. The appearance of "google it" has made it all the more impossible! Ugh.