This has been an issue for the last 6-8 seasons or so. I don’t recall exactly when it started. But in Team Flag Rush playground games in Horizon Open, the scoreboard during the second half of the game and at the very end of the game does not display the flag totals for the team that went first. The total score is always correct, but all individual players have a score of 0.
It worked fine at game launch. The regression was introduced somewhere along the way.