Not sure if anyone has reported this or not, but...
If you capture the enemy team's valour flag, your grunts health goes up, enemy grunts health goes down. Fine.
If the second flag is then retaken, your grunts health goes down to what it would be without any valour flags. Not so fine.
If you then take the enemy's valour flag again, your grunts health goes up to what it should be with one valour flag, even though you have two.
Apologies if anyone has already mentioned this.