In World 1 of my 360 game, I placed a score label in the top right side of the game screen. When I test the game, the distance score is being recorded, but the score is drifting right to left at the same pace as the background. BUT... if I put the score label in the "Gamefield UI", it remains in a fixed position as it should. I guess this is where it should be, which begs the question, "why is it available in the World Editor screen?"
Why not? Maybe you want to connect the score to the character for a certain game? We leave everything as open as possible, not everything you can do will make sense, but who knows. I see everyday customers doing things we would never had imagined.