I've noticed one of the terrain pieces in my For Elise level is messed up. Strangely enough, that specific instance of the piece is the only time it happens. See how at the very top after the leftmost eighth note the terrain gets very thin for a bit? True physics mode shows that that section is just as thick as the rest of that horizontal pole, but it shows up looking thinner. I'm not sure what causes this bug, and again, it is only that instance of the terrain. I use that piece of terrain everywhere in the level, but it is only thin in that one area. Also, in the editor window, it displays correctly, and it only becomes thin when playing the level.