serene glacier
If you drop an item anywhere near the kiln it will throw / drop the item the opposite direction from the kiln and this is only noticeable on this prop currently (That I have noticed).
I tested this in multiple location/directions and with multiple objects with same result.
I presume one of your guys collision spheres still has items set to block or the drop system is telling it to spawn the opposite direction (I don't visually see the prop bouncing, its going the opposite direction relative to the player instantly)