This happens (ed?) if at the start of the application a body is selected instead of a scene. Selecting a scene will solve this issue for later selecting a body.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
This happens (ed?) if at the start of the application a body is selected instead of a scene. Selecting a scene will solve this issue for later selecting a body.
Does not happen anymore if shadows have been disabled.