That has happened to me before, but I found that if you don't click on the score, but just drag then remove the cursor, it won't pop you back to the home page. Your score will stay wherever your curser was when it left the scale.
This has already been posted. However, it goes back to the AG home page becuase that mainly means that you have tried to vote on a game more than once or more than one game in 30 seconds.