I had the same thing happen to me however I have noticed that morale has improved with some players when I have won a match. It's early days but I suspect that morale is now linked to player performance and that has an impact. Previously I would only inject morale once a player dropped below the Yellow arrows however that hasn't happened and I've not had to use any Blue packs, but....... I have won all of my League and SL games so far so perhaps that's a factor too.