Have seen the same issue with the RedFalcon Flight System Heliz helicopter mod. Presents as a client side desync where the client side seems to get teleported and stuck in the falling animation. From other player perspective the teleported player hasn't moved and can be interacted with (hit, shot, cut, tied up). Relogging puts the player back where they started.

Looks to be happening at the end of the GetOutVehicle method.

Same with Sarka.

Here is the effect on helicopters{F2932433}