Textures in OSRS don't work with transparency meaning that when you perform an action that makes your character fade out (as with some teleports), the item will stay at full opacity whilst the rest of you disappears. To get around this, we create a 'dummy' object to replace the textured one and swap them out briefly during the animation.

Dame_of_Bones

So you're saying you duplicate the object?

No, we replace the object