I had several drag and drop questions. The only thing that annoyed me was that I could not view my work. It said if I clicked on it, I would have to answer the questions again.
As the exam doesn't tell you the correct answers, or even which question you got wrong (just sections) I can't tell if I got them wrong or if the exam messed it up. I did notice all the areas that had drag-and-drop questions I didn't receive 100%.