When the buffers stack up with bottles, the force of the bottle pushing against eachother causes the bottles to be pushed up and out of the conveyor, ideally this would not happen. At the current state of the game this is controlled by locking the y position while they are in the conveyor. Ideally this would not be the case and instead we would do things like increasing the weight of the bottles or changing frictions to make it so that they cannot push the bottles are. With the current features of the game this is not an issue as we do not have any features that requires allowing bottles to fall out of the buffers. If these plans do arise, we would need to change this.
When the buffers stack up with bottles, the force of the bottle pushing against eachother causes the bottles to be pushed up and out of the conveyor, ideally this would not happen. At the current state of the game this is controlled by locking the y position while they are in the conveyor. Ideally this would not be the case and instead we would do things like increasing the weight of the bottles or changing frictions to make it so that they cannot push the bottles are. With the current features of the game this is not an issue as we do not have any features that requires allowing bottles to fall out of the buffers. If these plans do arise, we would need to change this.