For the record, I did submit a ticket about this but was told to come to the forums so… here I am. I am not sure if this is just an issue with the mission cutscene itself or if it has anything to do with the cross-game playlist “Get In the Ring”.
Anyway, if you load up that particular playlist, when you get to the Halo 3 cutscene where Cortana is talking to Johnson at the beginning of the Halo 3 mission “Halo”, Johnson won’t appear on the screen as he is supposed to. Instead where Johnson should be the screen is just blank.
I don’t know if it is happening to anyone else but here is a quick 14 second video comparing the two scenes.