I had my quick heal set to "Basic Healing" and changed it to "Rugged Healing" so I could heal 3 bars, and I attempted to heal myself while I was at 2 out of 4 bars of health and it did not heal me, but it did use the items required. Then I switched it back to "Basic Healing", and it would not heal, but still used the items. Now the only heal that works is "Primitive Heal". I even tried using the "Speed Boost" heal, and again it used the items, but did not heal or give the bonuses that come with it.
I'm not trying to complain, but I tried to be as specific as possible to give you as much information as possible to work with. Thank you.