If you zoom in, about one in 20 is tumbling around path randomly, and its description is “Rocket body”. But it’s not on “Debris” layer. I wonder why it doesn’t

If you zoom in, about one in 20 is tumbling around path randomly, and its description is “Rocket body”. But it’s not on “Debris” layer. I wonder why it doesn’t qualify for debris if it looks likely uncontrollable.