Object display color error while using medium

[Bulwerk]

I notices strange visual artifacts while using Display Color layer node pipped into the albedo of a random walk medium and regular scattering medium nodes.
Using Octane 2022.1.1 R5

The behavior changes when what's directly behind the object gets turned off and we can see through to alpha as well.

I also tried using the OSL version of the display color node with the same error.

I have no problem using the object display color in other channels. It's such a convenient node it's a shame it's not working will with mediums.

Here is a link to the project file: https://www.dropbox.com/sh/stc1pn5lukao ... tgDIa?dl=0