you never got points or loot from every kill, so you might have to be a little more specific on your problem? i've gone entire missions without any loot drops.
You know how when you kill enemies at level cap you get bridge officer skill points? I've noticed that suddenly after the patch I don't get those skill points when I kill enemies on some maps. Sometimes it's dailies, sometimes it's foundry missions. Prior to the patch, every single kill in all dailies and other maps gave a few skill points.
I know not all enemies drop loot, but in these skill point "drought zones" no loot at all drops. It drops normally when I skill points from kills, but doesn't drop at all when no skill points are awarded. This makes me think the two are related.