If you are for example in a helicopter and you open your map, the sound will stop at the exact position where you open the map and stuck here until you close the map. You here your helicopter fly away. The problem is that the sound is always outside so on the map the sound off vehicles is really loud. The sound position where it stopped is the 3rd person camera point. So the problem is for milsim groups with 1st person that is a big sound difference, also annoying.