For the specific case, of a student manager editing quiz questions, the quiz module, assumes that the user has access to all questions if the user can access the manage questions interface. This adds a message if the student manager adds a question that he does not have access to it from the browse question. The browse questions does not filter questions with no access, but the validation of the for does.
"One of the supplied questions was invalid. It has been removed from the quiz."

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Jamesap created an issue.