There was a similar 'bug' in the quiz in 1.9, and eventually I was persuaded that it was acutally a 'feature' so I re-implemented it in 2.3: MDL-31509
There was a similar 'bug' in the quiz in 1.9, and eventually I was persuaded that it was acutally a 'feature' so I re-implemented it in 2.3: MDL-31509