Last night I was flying Boston bombers at the Night Fight at the Baltic snapshot. I noticed that that the moon is displayed at the front of friendly aircraft drones.
We were flying in a very tight group and I was looking upwards when KAntti flew over my plane with his Boston formation. His left drone went "behind" the moon graphic, which looked somewhat strange
So there must be a bug in the depth buffering since the moon should have been obscured by the drone aircraft and not vice versa