Thank you for the answer.
I just tested it in the dev branch, but unfortunately this issue still remains. I found a reliable way to easily see this: Take the Promet 6.5mm and shoot the knee, the unit must be facing towards you and has to be unarmed. Both Opfor and LDF (apart of the sweater variant) take 3 bullets to kill, while all the unarmed uniforms only take 2.

Is this just gonna be ignored? It is a big deal when it comes to fair PvP.

Try verifying integrity via Steam or reinstalling the game. Let us know if that fixed the issue for you.

I already found many more spots with those rocks without collisions. They are everywhere