It’s seems to be ok now!
So far so good, I tested it on the mission editor and air + cold start no crash to desktop when killed.
I used the same version DCS Steam Multi thread : 2.8.4.38947
The only thing that I changed is my Multiplayer password.
Unfortunately, I still have the same issue even after the last update DCS Open beta 2.8.4.38947 on Steam.
Crash to desktop when killed in Mi-8.
Cold-War-Syria-v80_DME2-20230414-204136.trk