For details on how I accessed the VRCImpostorSettings component, see https://feedback.vrchat.com/impostors/p/the-vrcimpostorsettings-component-is-unsearchable-and-is-missing-an-editor

Avatar ID: avtr_2aba2d3f-6e5b-4c0b-89d0-46893f96758e

On this avatar, I added a VRCImpostorSettings component on the Armature Game Object, and included 3 items on the Extra Child Transforms: the left and right ear, and the tail.

I was hoping for a little better behavior of the ears/tail/hips by doing this.

I was not expecting any sort of ear duplication.

It is very possible that I'm using the component wrong here, but documentation does say that the extra child transforms are "independent of the bone that (it) is placed on". Filing as a bug because it is either a code bug or a documentation bug (i.e., the documentation needs to be clearer or provide an example)