Thanks to @FileEX for pointing this issue out.

Statement: When warping an occupant into a vehicle during onVehicleStartExit, their state becomes bugged: the game still thinks they are inside the car, and they cannot enter any other vehicle until the vehicle respawns or the player dies

• Player tries to exit vehicle
• onVehicleStartExit event is triggered
• Script calls warpPedIntoVehicle(player, source) - player is warped back into vehicle
• BUG: Server still processes the exit and sets player as "exiting"
• Result: Player appears to be in vehicle but game thinks they're exiting
• Appears "stuck" in an inconsistent state

After Fix:

• Player tries to exit vehicle
• onVehicleStartExit event is triggered
• Script calls warpPedIntoVehicle(player, source) - player is warped back into vehicle
• Fixed: Server detects that warp occurred during the event via m_bOccupantChanged flag
• Result: Server aborts the exit process and sends VEHICLE_ATTEMPT_FAILED

Player stays in a consistent state, with correct position updates and the ability to continue normal gameplay without getting stuck.