Desync issue with multiplayer multicrew - when returning Démarreur (Starter) switch to middle position "A" (as of build DCS 2.9.17.11733)

[hannibal]

having desync issue with buddy copilot

first i slot in cold start aircraft, and do not do anything

my buddy copilot request multicrew join, and i accept

i wait until he is settled in

once buddy copilot settles in, i start up aircraft up to having the rotors sync with turbine

Desync occurs when i put the Démarreur (starter) switch back to 'A'... buddy reports that the rotors and turbine start shutting down, while it is all operational for me.

once he release slot and rejoin, everything is ok.

NOTE this issue DOES NOT Happen if i leave the Démarreur (starter) switch up on 'M' position...

also, some tutorials show to put starter switch to A, and others leave it on M...