Congratulations, and great score!
I also found that quite annoying.
And another minor annoyance - when I returned to one of the drag and drops that I had not even attempted to answer the first time around because of drag issues, some of the important text on the exhibit was unreadable. Irritating! Luckily, I had looked closely enough at the exhibit the first time to remember part of what was unreadable.
Anyway - great job!
TJ