IGLA, destroy or SUPPORT IN DESTROYING enemy aircraft

i have played 4 games this morning trying to get this challenge done and let me just say i would have had this done the first time if your game would count what you're saying its counting. I have every single game of the first 3 game, i had gotten 1 forced bail out and if you bail out at like 500M above the ground like i witnessed before the vehicle will undoubtable explode if it has less than 10% of its health left but lets not count that one. Then i got 3 forced crash notifications which should Definity have counted. Then we get into the 2 final kills of this particular match which i had shoot the helicopter and within 5 seconds the vehicles goes down and it get all the notifications of a kill and everything and nothing. On top of the fact that i had destroyed multiple aircraft after the pilot ejected again those kills should have counted as it counts as an enemy vehicle destroy on the ground when you blow up a vehicle someone recently jumped out of. and mind you this is all in 1 game. i had experienced 2 more games identical to this and i only have 1 vehicle destroy counted as the total. The final match i played was on Blackwell fields, (all the previous were on railway to Golmud) and upon trying to get the kills there i found out that you cant get helicopters sitting in spawn not coming out because of the absolutely stupid mechanic of "you cant shoot people on spawn" i don't think the real world you're trying to replicate has that unless you know about some hidden technology you would li8ke to share with us; and don't mention the "CIWS" because if it cant even have seen my missile with it being behind a hill it would have been impossible for it to have shoot it out of the sky. I have completed this challenge on multiply occasions and throughout multiple games and so i think it would be fair to me and a lot of other players going though this if you got rid of that part of the challenge as clearly your game cant handle the requirements anyways.