Hey guys. Sorry for the late response. I couldn't send you the project we were having issues with most recently (hence the delay in responding), but today i was able to replicate the issues in this file.
As you can see from the screenshot, this object (Bed B) is hidden from rendering and viewport in the parent REF null (this is the common way in which we hide reference objects in a scene so they are easily replaceable if changes occur in a project). So the interactive renderer should be reflecting the viewport. but it is not. If you toggle visibility of the reference bed, you'll see things go haywire and the interactive viewport can't be trusted at all. The final render, in this case, does not show the artifact bed in the background. only the interactive render.
