It appears between initial PBR/Atlasaurus and ExtraFPS the behavior of Media on a Prim changed for PBR materials. Previously, MOAP would override the Emissive channel, showing the media, as of ExtraFPS, this no longer appears to be the case, being completely hidden from view now. This has caused one of my products to catastrophically break.
(I'd use the "Cabinet TV [PBR, Media, 80s Ads]" version, as you'll know media is playing with the audio)
Difference Between Versions: https://imgur.com/a/eI23Jzf