Thanks for posting the photo, OG! I also apologize for not providing one myself sooner. This has been known about for quite some time but seems to have gotten lost on its way to being reported... probably amid the excitement of the plinths, which was going on at the same time. IIRC there is another building which becomes accessible in D04 as well when you bump it. That weird blank vid screen jutting out from the wall consistently be there whenever D04 is bumped.
This just illustrates how many discoveries we have in our collective brain trust which need to be documented in such a way that they're easily found.