I setup a game of Slayer, 3 players locally, on a Halo CE map. Works perfectly.
After the game, we see the results screen, with kills, deaths, etc by player.
However, we can’t find a way to exit this area to start a new game, or go anywhere else in the Halo Master Chief Collection.
Only options offered are:
- For Roster, that allows us to invite players or re-join, but nothing happens once we all re-join.
[Game Menu] - Career and Stats for the highlighted player.
“B” does not allow us to go back beyond this screen.
We’ve tried all other button combinations, and just can’t seem to get out of this post-game area.
Maybe a bug? Can someone help us find the way back out of this area?
Same exact problem for me, just now. I was playing 3 player locally with Halo 2 Anniversary map though. Lamesauce! 
Had the same issue today. Never had it prior. Has 343 acknowledged this?
I’ve found a temporary fix to this problem. apparently it happens when there’s more than two players on local:
- when the scoreboard screen that you get stuck on comes up without the option to press “B”, press the home button on the main controller
2.On the xbox home screen go to the top left corner and go to the accounts(“who are you?”) menu
3.sign out any two of the accounts that isn’t the main one if you are playing with 4 controllers or just sign out one account if playing with 3
4.Go back to Halo MCC and it should have the option to press “B” now
5.Once back on the custom game menu, add back the controllers you signed out and it should be back to what it was originally
Note: probably have to do this after every game