Could be reproduced in ArmA3 vanilla (no mods) with multiple air vehicles, Altis as well as Stratis, not in virtual but there are no objects outside so I could not easily see this.
I was searching if someone else reported an issue here or in the bohemia forums or anywhere else but could not find anything comparable. Maybe I searched for the wrong keywords and this was already reported somewhere. I would be very glad for a hint. If, on the other hand, no one observed this so far I am wondering what might be special for my setup ...